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Info on FRITZ!Box 6890 LTE

The update file contains the latest FRITZ!OS (Firmware) for the FRITZ!Box 6890 LTE.

Attention: This update file is only intended for use with FRITZ!Box 6890 LTE! Please follow the instructions at the end of this file to install the update.

Product:	FRITZ!Box 6890 LTE
Version:        FRITZ!OS 7.57

Language:       Dutch, English, French, German, Italian, Polish, Spanish

Release date:   09/04/2023

New features:

  • FRITZ!OS 7.56 - with over 150 new functions and useful improvements
  • New and improved functions for parallel and fallback operation
  • New energy-saving mode can be switched on upon request
  • Simplified replacement of a FRITZ!Box with new wizard
  • Mesh Wi-Fi now with dynamic smart repeating for better performance in the home network
  • VPN with WireGuard technology: Simple, fast, and secure connection to the home network from anywhere
  • More convenient telephony: New FRITZ!Fon "Voice" ringtone and block for unknown callers
  • Many interesting new Smart Home options: Scenes, routines, and lighting sequences
  • The user interface was fine-tuned and rounded out with comprehensive "Help and Info"
  • Many new functions for the MyFRITZ!App and FRITZ!App Smart Home (iOS/Android)

With each FRITZ!OS update, AVM also updates its security functions. Therefore we recommend performing the update for all devices.

Note: Instructions for configuring and using Mesh functions are presented at en.avm.de/mesh-faq

Below you find a complete list and descriptions of the new functions in the latest FRITZ!OS, along with a list of further improvements in this version.

New Features in FRITZ!OS 7.56

Mobile Communication:

  • NEW Support for Cell Broadcast Messages


  • NEW Network devices can be limited to using the Internet via Mobile network or DSL/WAN [1]
  • NEW Support of IPv6 for secondary internet access in fallback scenario [1]
  • NEW Automatic prioritization provides for fairly distributed data rates throughout the entire FRITZ!Box network (home network and guest network)
  • NEW VPN with WireGuard for simple setup of fast, secure VPN connections (for more, see [3]>
  • NEW The MyFRITZ! direct connection allows you to receive information on the FRITZ!Box in real time on MyFRITZ!Net


  • NEW Call handling allows call blocks and call diversion (e.g. to answering machine) for callers "not in the telephone book" (telephone book as positive list)
  • NEW On a SIP DDI line for corporate customers, call diversion settings can be configured so that the caller number is displayed at the destination (partial rerouting)


  • NEW The new, optional "Voice" ringtone announces the name in the telephone book that matches the caller number, or the location and the telephone number. For an alarm or appointment, the ringtone announces the reason for the reminder <for more on this, see [2]>
  • NEW The new FRITZ!Fon convenience function "Appointment Calendar" rings to remind about appointments

Smart Home:

  • NEW Configure and apply scenes to generate the mood for any occasion <for more on this, see [4]>
  • NEW Create and enable or disable routines (if-then combinations) for automatic interactions in the Smart Home <for more on this, see [4]>
  • NEW Templates for the comfort functions switch Wi-Fi access, switch Wi-Fi guest access, start telephone call, switch answering machine, send email (push service), and open web service (URL)
  • NEW Selection of an additional display of the temperature and humidity profile on the FRITZ!DECT 440
  • NEW Natural lighting sequences for device groups and templates with FRITZ!DECT 500
  • NEW Support for compatible external window sensors for the radiator controls' open window detection


  • NEW In "Mesh Repeater" operating mode, connections to the Mesh Repeater with multiple Wi-Fi bands are now possible <for more, see [4]>


  • NEW Support for storage media formatted in exFAT


  • NEW In the new energy-saving mode, Wi-Fi, LAN and USB use even less power for slightly reduced performance
  • NEW New wizard transfers all important Internet, telephony, and WLAN settings as well as connections to mesh, telephony, and smart home devices to a new FRITZ!Box <for more, see [8]>
  • NEW "Help and Info" in the user interface: A completely overhauled help function with many instructions based on user scenarios and a strong search engine


  • NEW MyFRITZ!App offers the option to enable prioritization for internet access on each home network device
  • NEW MyFRITZ!App allows home network devices to be renamed
  • NEW MyFRITZ!App allows a MyFRITZ! account to be created for MyFRITZ! internet access to the user interface of the FRITZ!Box (for iOS)
  • NEW FRITZ!App Smart Home supports scenes and the enabling and disabling of routines <for more on this, see [6]>

Further Improvements of FRITZ!OS 7.57


  • Fixed stability and security increased

Further improvements in FRITZ!OS 07.56

Mobile Communication:

  • Improved Mobile network overview with a new design and more detailed information on the mobile network connection (LTE information / overview)
  • Improved New modem firmware with various optimizations and improved stability
  • Improved Option to set the preferred mobile network type during initial connection
  • Improved More detailed error messages in cases of problems establishing the Internet connection or disruptions during the connection
  • Improved Accompanying event messages during a mobile modem software update
  • Improved Mobile connection authentication via CHAP supported (Other provider allows setting PAP or CHAP)


Improved Higher connection quality and stability to multiple remote sites Improved Optimizations for establishing connections with 35b VDSL profile to some LR-VDSL remote sites Improved Adjusted calculation of available bandwidth in the user interface


  • Improved Detection of missing data connectivity in the mobile network (dead peer detection) [1]
  • Improved Failure detection via DNS validation added for the primary internet connection in fallback configurations [1]
  • Improved Ability to influence the time span for the transition from the primary to the secondary internet interface in the fallback scenario
  • Improved Failure monitoring triggers the sending of important messages in case of a fallback/refallback event with distribution to FRITZ!Box overview, push mail, events and also with notifications to FRITZ!Fon and MyFRITZ!app
  • Improved Completely revised logic for the routing of Internet phone numbers via DSL/WAN or mobile radio with resulting more flexible usage options in fallback and parallel operation
  • Improved When the DNS server of the internet provider (or the listed DNS server) is interrupted, automatic switch to the public DNS server
  • Improved FRITZ!Box services (SMT, FTP, IGD and TR-064) offered via Bonjour or mDNS
  • Improved Unwanted queries from certain IP addresses to FRITZ!Box services can be blocked with the new IP block list
  • Improved "QUICK" added to the internet protocols supported by parental controls
  • Improved When internet access to storage media via FTP/FTPS is enabled, the randomly preselected port number is displayed
  • Improved Support for VPN user dial-in for Android mobile telephones and tablets with IKEv2 IPSec (preshared key)
  • Improved Optimized upload and download speeds by adjusting the TCP segment size (MSS clamping), now also for IPv6-based connections
  • Improved IPv4 VPN connections (IPSec) can be tunneled via IPv6, for instance to reach FRITZ!Box devices on DS Lite connections (IP6 tunnel for IPv4, IPv4-inIPv6)
  • Improved VPN packet acceleration supported in IPSec
  • Improved In the user interface, an image now illustrates the different types of VPN connections
  • Improved FRITZ!Box can be operated on IPv6-only connections
  • Improved No publication of IPv4 address to MyFRITZ!Net on dual-stack connections with carrier-grade NAT; MyFRITZ! address always resolved here into the IPv6 address
  • Improved After a restart, the FRITZ!Box refreshes its IP address with MyFRITZ!Net immediately (DynDNS update)
  • Improved A FRITZ!Box in "Mesh Repeater" mode is automatically registered with the MyFRITZ! account of the Mesh Master
  • Improved Support for IPv6 during prioritization of network applications and prioritization of a home network device
  • Improved Display of data loading from the guest network on IPv6 in the "Online Monitor"
  • Improved The IPv6 Interface Identifier used on the WAN port is chosen at random
  • Improved Improved tips and error messages on sharing ports on DSL Lite connections with PCP support
  • Improved Data traffic from Wi-Fi calling (VoWifi) with smartphones prioritized over the FRITZ!Box internet connection
  • Improved NTP interoperability improved through better estimation of the hardware clock's deviation
  • Change Predefined selection of DynDNS providers replaced by a general settings option
  • Change The "IPv6" tab is displayed for IPv6-only connections
  • Change Support for the User Service Platform specification (USP, Broadband Forum TR-369) and configuration on the "Provider Services" tab
  • Change When a new port sharing setting is created, the outdated "eMule" application is no longer listed
  • Change "Eplus" removed from the provider list for internet access (Germany)
  • Fixed The ICMP identifier for pings was set to 0 by the FRITZ!Box in some rare cases
  • Fixed The FRITZ!Box could send an invalid Phase1 ID for VPN user dial-in via IPSec
  • Fixed The entry field for the IPv6 LAN prefix was too small
  • Fixed The IPv6 address could not be entered manually for IPv6 port sharing
  • Fixed Devices in the guest network with a captive portal were not connected to the internet via IPv6
  • Fixed IPv6: When SLAAC was used and the DHCPv6 server was disabled in the FRITZ!Box, after a restart IPv6 could not longer be used in the home network
  • Fixed In individual cases, deletion of a port sharing setting deleted additional port sharing settings of the same device
  • Fixed VPN connections (IPSec) to StrongSWAN via IPv6 failed under some circumstance
  • Fixed VPN connections (LAN-LAN) could not be saved without a name
  • Fixed In some scenarios the FRITZ!Box's NTP server did not work after re-establishing the internet connection
  • Fixed Under certain circumstances, not all DNS servers made available by the provider were used


  • Improved When a radar event is detected, the system attempts to hold the channel with reduced bandwidth
  • Improved When a radar event is detected, the system attempts to hold the channel with reduced bandwidth
  • Improved When encryption on the Mesh Master is changed to "non-encrypted", activation of the 5-GHz Wi-Fi network is ensured and wireless devices are correctly deregistered if necessary
  • Improved Data rates increased when exchanging data with certain wireless devices
  • Improved The legend below the "Allocation of Wi-Fi Channels" diagram on the "Wi-Fi / Wi-Fi Channels" page is now displayed in a single line
  • Improved Optimized automatic channel selection when checking for prioritized use in the 5-GHz Wi-Fi network
  • Improved The adjustment of radio channel settings in the 5-GHz frequency band now allows all channel numbers to be selected
  • Improved The overlay with message on the "Load on the Current Wi-Fi Channel" diagram is now also shown when VHT160 mode is enabled
  • Change New message under "System / Event Log" when a new session key was negotiated (encrypted connections compliant with the WPA3/SAE standard)
  • Change Restructuring of the "Wi-Fi / Wi-Fi Network", "Wi-Fi / Security", and "Wi-Fi / Wi-Fi Channel" pages
  • Change MAC address filters are limited to a maximum of 128 entries
  • Fixed On the user interface for the "Wi-Fi Guest Access", starting the WPS quick connection was linked with the "Wi-Fi / Security / WPS" page
  • Fixed Incorrect information when Wi-Fi disabled when "Internet connection via Wi-Fi" is selected
  • Fixed The period for displaying the load on the Wi-Fi channel could not be changed in the user interface when the 2.4-GHz Wi-Fi network was disabled
  • Fixed Sorting of "Other Wi-Fi Networks in Your Vicinity" table by name did not always work reliably ("Wi-Fi / Wi-Fi Channel" page)
  • Fixed Preset name for Wi-Fi guest access linked to the language selection
  • Fixed When a WPS quick connection was started during the check for higher-priority users (e.g. radar), an incorrect message could be displayed under "System / Events"


  • Improved Higher data throughputs in the Mesh Wi-Fi possible thanks to dynamic smart repeating <for more, see [3]>
  • Improved Display of home network connections on the "Mesh" page of the user interface responds more quickly to changes
  • Improved Home network devices (e.g. printers or NAS) displayed in the "Mesh Overview" can be opened directly by link
  • Improved Changed country and language settings of the Mesh Master are automatically transmitted to the Mesh Repeater
  • Improved New message in "System / Event Log" when FRITZ!OS removes a network loop
  • Improved "Mesh Overview" now shows network switches that use the LLDP protocol
  • Improved "Mesh Overview" now shows deployed network switches or access points in sequence
  • Improved Indication on the start page of the user interface when there are FRITZ! devices in the home network that are not yet enabled for Mesh
  • Improved Region and language settings of the FRITZ!Box are adopted by FRITZ!Repeater(s)


  • Improved Robuster handling of inconsistent data in Apple telephone contacts
  • Improved Support for using up to 10 individual telephone numbers (MSNs) with the "Telekom CompanyFlex" rate (Germany)
  • Improved Online contacts from web.de, gmx.de, and 1&1 converted to CardDAV
  • Improved Revised display of table of configured call diversions
  • Improved Encrypted telephony more robust against lost connections
  • Improved Optimization for integration of a telephone book into Mesh
  • Improved Designation of a caller's telephone number in the call list, even when a telephone number specified by the caller was also transmitted
  • Improved Optimization of automatic configuration of telephone numbers by the internet provider
  • Improved Reworked texts for push services on fax function and answering machines on fax function and answering machine
  • Improved Support for more call scenarios with voice data transmission before call acceptance (P-Early-Media)
  • Improved Wizard for telephony devices enables configuration of internal fax function without enabling fax reception
  • Improved Display of certain table columns in the "Telephone Numbers" can be switched on or off
  • Improved CAPI over TCP can be disabled if desired via "Diagnostics / Security"
  • Improved Prioritization of telephony data adjusted to comply with the Deutsche Telekom specification 1TR112 V14
  • Improved FRITZ!Box takes note of the last 20 destination telephone numbers for call diversion and offers these when new call diversion settings are configured
  • Improved For messages on the answering machine, the name that matches the caller's number in the telephone book, or the location and telephone number, can be announced while listening to messages
  • Improved Call diversion settings and call blocks for incoming calls can be restricted to a single telephone number in the home network
  • Improved Supports groups for online contacts from Apple
  • Improved Support for photos for online contacts from Apple, Telekom, and CardDAV providers
  • Change Outdated entries removed from the list of telephone providers
  • Fixed If the internal fax machine was used with the "only send" setting, incoming calls were not logged in the call list
  • Fixed Newly created telephone numbers could not always be edited retroactively
  • Fixed Root number was not displayed when the settings of the SIP DDI line were edited
  • Fixed Umlauts in the names of telephony devices were sometimes converted into special characters
  • Fixed Under certain rare conditions, the initiator of a three-party conference was not able to hear the two other parties


  • Improved Support for DECT headsets from the Sennheiser EPOS series for outgoing calls and picking up calls via the headset button
  • Improved Higher resolution of images from Google online contacts
  • Improved Convenient control of DECT headsets that are GAP or CAT-iq 2.x-compliant
  • Improved Quick dial for number keys 2 to 9 can be set up directly on the FRITZ!Fon by pressing and holding the numbers
  • Improved More convenient use of DECT handsets
  • Improved Three new ringtones with bird sounds available for FRITZ!Fon ("Whistling", "In the Woods" and "Yardbirds") (configured under "MENU / Settings / Audio / Ringtone / Own ringtone")
  • Change Missed calls older than 28 days are no longer signaled by a message key blinking red on the FRITZ!Fon

Home Network:

  • Improved Reworked details pages for network devices
  • Improved FRITZ!Powerline devices can be restarted in the "Device Details" of the FRITZ!Box user interface under "Home Network / Network" or registered by clicking a button
  • Improved Own network device highlighted in the overviews of the user interface
  • Improved More flexibility when assigning your own names for a network device in the home network for display in the user interface: Spaces and special characters are allowed
  • Improved The icon in the user interface for prioritized network devices was updated
  • Improved Reworked user guidance through changing of the FRITZ!Box name

Smart Home:

  • Improved Template for radiator controls expanded with addition of comfort temperature and cool-down temperature as well as antifreeze and boost functions
  • Improved Sunrise/sunset schedule with more settings options independent of sunrise and sunset
  • Improved The "Adaptive heating start" function can be disabled for radiator controls
  • Change "Smart Home" menu subdivided into "Devices & Groups", "Automation" and "Operation"


  • Improved Media data are read in completely with "Refresh index"
  • Improved A list of FRITZ!Box users with the right to access NAS contents is displayed under "Home Network Sharing"
  • Improved A message appears indicating when the maximum number of sharing links is exceeded
  • Improved After completion of fax configuration, a USB folder for storing faxes can be selected under "Settings for the Fax Function"
  • Change When uploading files to fritz.nas, the creation date of the respective file is now displayed
  • Change MagentaCloud removed as a media source in the internet because API is no longer compatible
  • Change After indexing, the ".start_indexation.mp3" file is no longer displayed via SMT/FTP
  • Fixed Added radio stations were displayed only after manual indexing
  • Fixed After starting operation of "FRITZ!Box as Mesh Repeater", the network drive function (SMB) was not always available
  • Fixed Accessing a sharing link allowed the creation of additional sharing settings
  • Fixed During the slide show of FRITZ!NAS images, the control for the duration of the display was not displayed correctly
  • Fixed Folders in the uppermost level of the directory structure were not displayed in the selection dialog for moving files


  • Improved The INFO LED flashes during a running update of the mobile modem software
  • Improved New display of Wi-Fi connections between FRITZ! devices
  • Improved Summary of information areas on the "Overview" page for better orientation
  • Improved New design and improved operation concept for logging in to the FRITZ!Box user interface <for more on this, see [4]>
  • Improved Revised layout of the FRITZ!Box user interface <for more on this, see [4]>
  • Improved Changed operating concept for changing settings in the user interface <for more on this, see [4]>
  • Improved Under "System / FRITZ!Box Users / Apps", the FRITZ!Box user from which each app has been configured is displayed for each app
  • Improved The "Forgot Password" push service email now contains information on the device that requested this mail
  • Improved If desired, the selection list of FRITZ!Box users can be hidden during login to the user interface from the home network
  • Change Simplified flashing behavior of the FRITZ!Box LEDs when connection is triggered by the "Connect" button
  • Change The hyperlinks for Contents, Manual, Tips & Tricks, en.avm.de, and Legal Notice are now located under "Help and Info"
  • Change New contents under "Help and Info / Get to Know the Functions"
  • Change Additional confirmation for configuring certain settings can no longer be switched off <for more on this, see [6]>
  • Change The push service for the Wi-Fi guest access sends registration and deregistration events of the guest devices from the Mesh Repeater or Mesh Master with which the devices are registered
  • Fixed The display of several "Exposed Hosts" for two different devices under "Diagnostics / Security" was sometimes misleading


  • Improved Use of a random SIP port possible under "Telephony / Telephone Numbers / Line Settings / Security"
  • Improved All a user's rights listed under "System / FRITZ!Box Users"
  • Improved Information about security methods currently used on SIP remote sites under "Diagnostics / Security / Telephony"
  • Improved Display of the last ACS connections under "Diagnostics / Security / Provider Services (TR069)"
  • Improved While login is blocked due to an incorrect password entry, the password entry field can be edited for the next login attempt
  • Improved SIP port can be reached from the internet only by the set protocol (IPv4 or IPv6)
  • Improved Protection from frequent login attempts with incorrect password via the SMB protocol


  • Improved FRITZ!Apps support with explanation of where the preset FRITZ!Box password is found on the FRITZ!Box
  • Improved MyFRITZ!App shows when internet access is blocked for each home network device
  • Improved MyFRITZ!App with additional connection information for the home network devices
  • Improved When MyFRITZ!App is registered with a FRITZ!Box that has not yet been configured, MyFRITZ!App indicates this and offers to open the browser for configuration
  • Improved MyFRITZ!App displays Wi-Fi dual-band connections for "Your Mesh" in the "Overview" diagram
  • Improved MyFRITZ!App reliably displays Mesh connection paths graphically, even for more complex constellations
  • Improved MyFRITZ!App indicates when Mesh functions have not been enabled in the Mesh Repeater
  • Improved MyFRITZ!App sets the name of the smartphone or tablet as the name of the network device in the home network of the FRITZ!Box if no name was assigned yet (for Android)
  • Improved MyFRITZ!App supports the convenience function of call diversion for callers "not in the telephone book"
  • Improved FRITZ!App WLAN displays the channel bandwidth of the Wi-Fi connection
  • Improved FRITZ!App Smart Home displays the adaptive heating (preheating phase) of radiator controls
  • Improved FRITZ!App Smart Home displays open window detection with a window sensor on the radiator control
  • Improved FRITZ!App Smart Home supports the creation of templates for the current light setting
  • Improved FRITZ!App Smart Home displays a message when applying templates

[1] New and improved functions for parallel and fallback operation

With the update to FRITZ!OS 7.56, the FRITZ!Box 6890 LTE has a whole range of new and improved functions relating to the operating modes failure protection (fallback) and parallel internet access (parallel operation of mobile communications and internet access via DSL or WAN):

I. Restrict network devices to Internet use via mobile network or DSL/WAN

The data traffic of a specific network device cannot always be transmitted via any Internet interface. If, for example, internet connections from different providers are used in parallel operation and a certain service such as IPTV is only available via one of the two providers used on the FRITZ!Box 6890 LTE, then FRITZ!OS 7.56 can now be used for a network device such as an IPTV set top box can be assigned a specific Internet connection. This new setting option can be found under Home Network/Network/Network Connections - and here in the properties of the respective network device in the "Access Properties"/"Internet Connection" section.

II. Support of IPv6 on the secondary internet access in the fallback scenario

With FRITZ!OS 7.56, if the primary internet connection fails, not only IPv4 is provided via the fallback connection, but also IPv6, provided this is supported by the provider of the secondary internet connection.

III. Detection of missing data connectivity in the mobile network (dead peer detection)

In mobile networks it can happen that the network terminates an inactive mobile connection of its own accord, but the message that the termination has been completed cannot be successfully transmitted to the mobile device. In such cases, the modem of the mobile radio device then assumes that the mobile connection continues to exist and can continue to be used if necessary. FRITZ!OS 7.56 now has what is known as Dead Peer Detection, which is always active in the background and can be used to automatically detect and resolve such deadlock situations - without user interaction, i.e. completely self-healing.

IV. Failure detection via DNS validation for the primary internet connection in fallback configurations

An additional possibility of failure detection on the primary Internet connection is now available with DNS-based failure detection. Like dead peer detection, this is based on the fallback to public DNS server function, which is also new in FRITZ!OS 7.56. In many cases, this can accelerate the detection of a failure or, in certain scenarios, make it possible for the first time (IP client configurations).

V. Setting option for the time span of the transition from the primary to the secondary internet connection in the fallback scenario

Immediate transition to the fallback connection is not always the best option after the primary internet connection fails. FRITZ!OS 7.56 therefore now offers a setting option for the time between detection of the failure and execution of the fallback to the secondary internet connection. There is also another new setting option for the period of re-fallback in the event that the secondary Internet connection becomes usable again.

VI. In case of a fallback/re-fallback event, failure monitoring triggers the sending of important messages with distribution to the FRITZ!Box overview, push mail, event section and messages to FRITZ!Fon and MyFRITZ!app

With the fallback function, the FRITZ!Box 6890 LTE offers the highest level of reliability for the Internet connection. As a user or administrator, you can sit back and relax and let the FRITZ!Box handle the internet connections completely, but sometimes it's still helpful to know whether the internet connection is currently being established via the primary or the secondary internet connection. In addition, not every outage is self-healing and sometimes the service of the Internet provider affected by the outage has to be contacted. In order to be able to stay up to date in this regard, the FRITZ!Box 6890 LTE now sends so-called "important notifications" via various communication channels in the event of fallback or re-fallback events - such as push mail, FRITZ!Fon and MyFRITZ! app.

VII. Completely revised logic for the routing of Internet phone numbers via DSL/WAN or mobile communications with the resulting more flexible usage options in fallback and parallel operation

Sophisticated logic in the FRITZ!Box 6890 LTE decides when which phone number can be used via which internet connection. This is extremely helpful, especially in parallel operation, but also helps in fallback operation, using telephone numbers that match the Internet connection currently in use for telephony via the FRITZ!Box telephone system. With FRITZ!OS 7.56, this logic has been completely revised and perfected.

[2] More Convenient Telephony: FRITZ!Fon Learns to Speak

The FRITZ!Fon gets a new appointment calendar and learns to speak. With the new "Voice" ringtone, FRITZ!Fon can now inform you about callers you have stored in your contacts or calendar entries with announcements such as "Call from Claudia" or "Leave now for the train station".

New "Voice" Ringtone

The new "Voice" ringtone announces the name of the caller, if available, or the location the call is coming from along with the telephone number of the caller. It's available for incoming calls, but voice announcements can also be selected for alarms and appointments. When you get a call, instead of a ringtone the caller's name is announced if their telephone number is in your contacts. If there is no telephone book entry, the location from which the call is coming is announced, depending on the country, along with the telephone number of the caller. You'll need to have an active MyFRITZ! account. This feature can be enabled under "Telephony / Telephony Devices" in the user interface. Select the FRITZ!Fon handset you want to edit, assign one or more telephone numbers for incoming calls, and then switch to the "Ringtones" tab. Select there the "Voice" ring tone for the corresponding telephone number at the end of the list. You can configure additional settings under "Voice Ringtone". For alarms and the appointment calendar you can select the "Voice" ringtone directly on the FRITZ!Fon.

Appointment Calendar

With the new calendar, you can now set up appointments in FRITZ!Fon and create a reminder for them. You can also be reminded of the appointment with the new "Voice" ringtone. Note: The new features are available for FRITZ!Fon M2, C4, C5 and C6 with the latest handset firmware.

[3] Scan the QR Code and You've Got a Connection: VPN with WireGuard

Support for the WireGuard VPN protocol is also new, making it even easier to set up secure connections from the internet to the FRITZ!Box home network ? for example when working from home or if you want to access your home network while on the move. With the new WireGuard Assistant on the FRITZ!Box, encrypted connections can be set up on smartphones, notebooks or PCs in no time at all using the WireGuard app via QR code or software. The previous VPN protocol for FRITZ!Box, IPSec, has also been updated by the AVM development team and now supports both IPv4 and IPv6 connections.

WireGuard Support for Simple Setup of VPN Connections

WireGuard(R) is a modern, easy to understand, fast, and simple VPN solution. For most operating systems, there are apps or programs from WireGuard for connecting single devices to a network via WireGuard VPN. WireGuard is a registered trademark of Jason A. Donenfeld (https://www.wireguard.com). WireGuard is not compatible with other VPN protocols. Therefore it cannot connect to IPSec, OpenVPN and similar peers. WireGuard itself does not contain any mechanisms for key distribution. Both parties therefore require the public keys of the respective remote site. The concept for the FRITZ!Box is that both key pairs can be generated on the FRITZ!Box to set up a connection, and all the necessary dial-in data can be imported on the client side via a file or QR code, e.g. in the WireGuard App. For your FRITZ!Box to be accessible via WireGuard VPN, you need a MyFRITZ! address (you'll need to register your FRITZ!Box with MyFRITZ!Net) or a third-party DynDNS address for your FRITZ!Box. Please note that the connection configuration ? QR code or configuration file - is not permanently stored on the FRITZ!Box (for security reasons). Do not let the QR code or configuration file fall into the hands of unauthorized persons.

[4] More Performance in Mesh Wi-Fi

With dynamic Smart Repeating, FRITZ!OS 7.50 brings more performance to the Mesh Wi-Fi of the FRITZ! home network. Users who use a FRITZ!Repeater or a FRITZ!Box as a Mesh Repeater thus benefit from higher data throughputs and more stability for their Wi-Fi connections. With the new FRITZ!OS version, both frequency bands (2.4 and 5 GHz) are used even more dynamically for the optimal connection between the FRITZ!Box at the connection and the Mesh Repeater.

Mesh Wi-Fi ? More Performance for FRITZ!Box as Mesh Repeater

FRITZ!Box devices that support "Mesh Repeater" operating mode could previously be connected to other FRITZ!Boxes or also FRITZ!Repeaters only with one Wi-Fi band (2.4 or 5 GHz) at a time. With the new FRITZ!OS, it's now also possible to use more than one Wi-Fi band for the Wi-Fi uplink. This enables higher data throughputs and stability in the Mesh. When updating a Mesh network that's already been set up with an older FRITZ!OS, which consists of one or more FRITZ!Box devices in Mesh Repeater mode, the previously unused Wi-Fi band is connected automatically.

[5] More Operating Convenience and a Clear FRITZ!Box Menu

FRITZ!OS 7.50 also refreshes the design of the fritz.box user interface and makes it even easier to read. The restructured overview page helps users find their way around even better. If you want to find out more quickly about how to use the FRITZ! products within the menu, you can get tips and instructions directly from the new online help, including a keyword search. The FRITZ!Box user interface has been visually refreshed with the new version. Particularly noticeable here is the separation of the menu from the left edge of the screen and the width of the displayed pages have been trimmed for better readability. This has a positive effect on tables and texts, especially when displayed on particularly large screens (resolutions), and at the same time improves the display on smartphones and tablets. The redesign is based on a new style guide that facilitates the integration of innovative operating concepts.

[6] If FRITZ!, Then Smart - New Options With Scenes and Routines

With FRITZ!OS 7.50 the FRITZ! Smart Home becomes even more versatile. With scenes, a range of different actions can now be called up simultaneously in the Smart Home. The new routines ensure devices, scenarios and templates with an if-then link are automatically started.

Scenes ? Create the Perfect Mood for Every Occasion

With scenes you can simultaneously perform different actions in the Smart Home. For example, with the "Coming Home" scene, all radiator controls can be set to the comfort temperature at the touch of a button, and your LED lights and smart plugs, the Wi-Fi and/or guest Wi-Fi, and the answering machine can all be switched on at the same time. The preconfigured two scenes "Coming Home" and "Leaving Home" can be applied directly. They consist of automatically generated templates that can be subsequently turned on and off as required. With a scene you create yourself, multiple devices can be combined and controlled. Templates that have already been created can be added and deleted on an individual basis. Furthermore, individual templates can be created as a simple scene. Settings for devices and/or device groups can be saved and reused with templates. Scenes can be used via the FRITZ!Box, a FRITZ!Fon, FRITZ!App Smart Home or the FRITZ!DECT 440.

Routines - for Customizable Automations in the Smart Home

Routines enable devices, scenes and templates to be automatically controlled or enabled by an if-then link. The shortcut consists of a trigger and a condition that must be met for an action to be performed. In the Configuration Wizard, you can define a device as a trigger, then specify the change in state or an event (condition). Finally, a previously created scene or template (action) is selected, which is activated when the condition is met. For example, if the humidity measured by the FRITZ!DECT 440 reaches a certain level, the previously configured scene "Ventilation" with a FRITZ!DECT 200 smart plug with a connected humidifier is applied.

[7] Additional Confirmation

After this update, additional confirmation for certain settings and functions can no longer be disabled. However, if additional confirmation was disabled before the update, this condition remains intact after the update. AVM recommends always using additional confirmation for reasons of security. To allow changes to protected settings from on the go, the TOTP standard with one-time passwords can be also used for additional confirmation. A freely available password manager or a separate app like the Google Authenticator can be used for this.

[8] New wizard transfers all important settings for the internet, telephony, and Wi-Fi network, and connections to Mesh, telephony and Smart Home devices to a new FRITZ!Box.

Please take note of the following tips and requirements:

The Wizard provided in this FRITZ!OS offers assistance if you are using a FRITZ!Box that you would like to replace with another new FRITZ!Box. Any other FRITZ! products connected with your currently used FRITZ!Box, including FRITZ!Repeaters, FRITZ!Fons, FRITZ!DECT Smart Home products, and FRITZ!Apps will also be connected to the new FRITZ!Box.

This new switching function makes it easier to exchange your old FRITZ!Box with another FRITZ!Box, so that

  • the Wi-Fi and home network and all of the connected home network devices will work the same after the switch

  • no settings have to be changed on the devices connected with the FRITZ!Box because of the switch

  • the internet connection and telephony can continue to be used in the same way

  • all important settings on the currently used FRITZ!Box are transferred to the new FRITZ!Box (for instance, for telephony, Smart Home, and MyFRITZ!)

  1. Two steps must be taken to prepare the other, new FRITZ!Box:

    • a current FRITZ!OS version 7.55 or newer. During the course of the wizard you will be prompted to update your new FRITZ!Box if necessary.

    • Set your new FRITZ!Box back to its factory settings , if it was used at all before, and then disconnect it from electrical power.

  2. The currently used FRITZ!Box provides the internet connection on your line and has the latest FRITZ!OS version 7.55.

  3. If you use any FRITZ!Repeaters: Update their FRITZ!OS.

  4. If you use FRITZ!Fons or FRITZ!DECT Smart Home products, check whether a software update is available and, if so, install it.

  5. If you use FRITZ!Apps for the previously used FRITZ!Box, have your smartphone ready.

  6. You must have physical access to the FRITZ!Box you are currently using, so that you can insert its network cable and press the buttons. The other, new FRITZ!Box should be close at hand. You will also need to connect to electrical power and the internet for the switching procedure.

  7. If you are not only changing the FRITZ!Box model, but also the type of connection (for instance, from DSL to fiber optic), then the other, new connection must be ready for operation.

  8. You must be connected with the home network of the currently used FRITZ!Box with a notebook or computer (recommended) or by smartphone. Under "Wizards" in the http://fritz.box user interface there is a "Transfer Your Settings to a New FRITZ!Box" link to click. Read the instructions presented there and follow them carefully. The process usually takes around 10 to 30 minutes, depending on the complexity of the home network.

New functions of FRITZ!OS 7.28

Mobile Communication:

  • NEW Send function for SMS and Journal for received and sent SMS (Internet/Internet access/SMS)


  • NEW Prioritization of a home network device can now be enabled on the FRITZ!Box user interface


  • NEW Fax function: Log for received and sent faxes
  • NEW Support for the "Telekom CompanyFlex" business telephony platform (SIP trunk and cloud PBX)


  • NEW New start screen with current weather information (currently only available for germany)


  • NEW FRITZ!DECT 440 measures humidity and allows its display with FRITZ!App Smart Home and FRITZ!Fon
  • NEW FRITZ!DECT 440 displays the QR code for simple connection with the Wi-Fi guest access
  • NEW Smart Home: Lightsequence "Wakeup/Sleep" for FRITZ!DECT 500 and compatible DECT LEDs
  • NEW Guest Access or answering machine can be switched on and off at the touch of a button on the FRITZ!DECT 440
  • NEW Roller shutter control via FRITZ!DECT 440, FRITZ!Fon, and the FRITZ!Box user interface
  • NEW At the touch of a button on FRITZ!DECT 440 or 400, an internal phone rings and displays a message

Additional improvements in FRITZ!OS 7.29

Mobile communication:

  • ** Fixed ** In very rare cases the mobile modem could remain in a permanent reboot at system start
  • ** Fixed ** No 3G data connectivity since the update to FRITZ!OS 7.28 if CS Voice is blocked on the network side
  • ** Fixed ** No LTE connection if there is an error in the SMS memory on the SIM card


  • Improved List of trusted certification authorities updated
  • Improved When internet access to storage media via FTP/FTPS is enabled, the randomly preselected port number is displayed
  • Fixed When using the FRITZ!Box on a Vodafone connection with ADSL profile, no PPPoE connection could be established


  • Improved Encrypted telephony more robust against lost connections
  • Improved Enhanced interoperability for use of encrypted telephony
  • Fixed Restricted availability by telephone when using telephony via IPv6


  • Improved compatibility with MacOS 12.0 "Monterey"
  • Improved compatibility with several older devices (printers, scanners)

Further Improvements of FRITZ!OS 7.28

Mobile Communication:

  • Improved New software for the mobile modem with improved stability of the mobile connection

  • Improved Push service for SMS now also supports sent SMS

  • Improved Optimizations for mobile radio in the diagnosis

  • Fixed Start of the diagnosis sometimes leads to the reconnect of the mobile connection

  • Fixed After the mobile connection was broken, there was sometimes no automatic attempt to re-establish the connection


  • Improved Better stability and interoperability
  • Improved Better interoperability with Long Reach VDSL
  • Improved Improved supervectoring 35b on some remote sites


  • Improved Assignment to devices added to the access profile settings in the parental controls

  • Improved Device status (active/not active) is displayed in the selection of devices for port sharing

  • Improved Clearer display of port sharing overview on mobile devices

  • Improved Independent port sharing settings for a device are now permitted when the request was made over IPv6 for the IPv4 address of the device - and vice versa

  • Improved Event message when port 80 temporarily released for sharing in order to issue certificate for letsencrypt.org

  • Improved DNS over TLS (DoT) more robust

  • Fixed In certain scenarios, IP client operating mode could not be configured correctly via LAN with DHCP

  • Fixed Formatting errors occured in the configuration of IPv6 routes

  • Fixed Display corrected in the port sharing overview

  • Fixed After activating DNS over TLS (DoT) and longer run times, certain websites could no longer be resolved

  • Fixed After update of FRITZ!OS 7.03 or older, the IP address was not refreshed on MyFRITZ!Net (DynDNS)

  • Fixed Repeated dropping and reestablishment of VPN connections after automatic disconnection

  • Fixed IPv6: After the home network prefix was refreshed, invalid IPv6 addresses for guest access were not deleted

  • Fixed Changes to access profiles were sometimes rejected groundlessly with the error message "The list of blocked network applications with this ID already exists."

  • Fixed "PTR" type DNS queries were not always resolved correctly

  • Fixed IPv6: In IPv6 route advertisement (RA) with option 25 (Recursive DNS Server), sometimes bits from the "Reserved" field were set

  • Fixed After restoring factory settings, the first VPN connection configured no longer worked

  • Fixed After importing a configuration with an alternative LAN IPv4 network, the local DNS server remained in the old network after settings were adopted

  • Fixed The TR-064 parameter WANAccess was sometimes incorrect ("granted") when no WAN was available upon restart

  • Fixed "PTR" type DNS resolutions were not always possible

  • Fixed Sending of advanced support data did not trigger a push mail

  • Fixed When a saved configuration was adopted selectively, not all of the push mails originally configured were adopted

  • Fixed VPN connections via L2TP (e.g. in Windows 10) were unexpectedly slow

  • Fixed Device block had no effect in certain scenarios

  • Fixed When a FRITZ!Box was operated behind certain cable modems, brief interruptions of the internet connection occurred every 12 hours

  • Fixed In factory settings the first VPN connection could not be enabled for a single instance

  • Fixed When using a mobile tariff with a fixed IPv6 address, no connection status was shown on the overview page

  • Fixed In provider tariffs for fallback or parallel operation, the TR069 service sometimes did not switch to the secondary interface if the primary Internet connection failed

  • Fixed In certain constellations, a VPN connection no longer worked after fallback/re-fallback of the primary Internet connection in parallel or fallback mode

  • Fixed No IPv6 over LTE if LTE is the primary Internet connection in parallel or fallback mode

  • Fixed No display of the IPv6 interface ID in the device share

  • Fixed IP address of the PDN gateway is no longer rendered

  • Fixed After failure of primary internet connection and fallback to secondary connection, no MyFRITZ! registration took place

  • Fixed Public subnet did not work in parallel operation after primary connection failed


  • Improved Completely reworked settings pages for call diversion and call blocks

  • Improved First Configuration wizard offers configuration of a telephone

  • Improved Call diversions offer option to divert selected calls to a certain telephone on the FRITZ!Box

  • Improved Setting for using internal fax machine added to "Send faxes only"

  • Improved The "Email" and "RSS" tabs are hidden in the "Telephony / Telephony Devices" menu when DECT is switched off

  • Improved Display and management of entries in telephone books completely reworked (among others, photo visible in overview, columns can be selected for display, and selection of multiple entries added as well as copying and moving entries between telephone books)

  • Improved Settings for sending and receiving faxes combined under "Telephony / Telephony Devices"

  • Improved After all new received fax documents in the fax log have been opened, the "Info" LED stops flashing

  • Improved Integration of multiple CardDAV telephone books supported

  • Improved Better compatibility of the FRITZ!Box's SIP registrar to the SIP client LinPhone

  • Improved Better compatibility to telephone providers Easybell and VoIPfoneUK

  • Improved Enhanced compatibility for encrypted telephony

  • Improved For country setting "Germany" and telephone number configured automatically by provider, the area code included in the number is detected automatically and adopted in the line settings

  • Improved Voice quality better for telephone calls

  • Improved Forwarding of calls accepted on Snom IP telephones supported without query

  • Improved Stability

  • Improved Better interoperability for CardDAV-based online telephone contacts

  • Change Adjustment to the changed behavior of the T-Net-Box when calls are rejected, for instance due to call blocks

  • Change Necessary adaptation to changed demands for authentication with Google (Google telephone book and calendar)

  • Change Necessary change for use of a Google online telephone book in the future

  • Fixed Web address of the CardDAV server could not be changed in online telephone books after entry

  • Fixed On a FRITZ!Box used as a Mesh Repeater for telephony, it was possible to edit the telephony numbers adopted from the Mesh Master and also to create new telephony numbers

  • Fixed Telekom SIP trunking account could not be disabled

  • Fixed In integrated iCloud contacts (Apple), first and last names were sometimes displayed in inconsistent order

  • Fixed During synchronization of entries in online contacts (CardDAV), in certain constellations all email addresses were deleted

  • Fixed Certain telephone numbers were temporarily not registered (among them Sipgate, EnviaTel, Teledate)

  • Fixed Connections dropped after about 30 seconds for telephony connections secured by TLSonly (among others, KPN)

  • Fixed In certain constellations, only one-way voice transmission was possible during telephony via IPv6

  • Fixed Unsuitable presettings for telephony provider Vodafone Italy

  • Fixed Registration of telephone numbers was not possible with telephony profile for provider Vodafone Italia

  • Fixed Sporadic errors when faxing via T.38 connections

  • Fixed No hold announcement after resetting to factory settings

  • Fixed Pickup on IP telephones was possible for no longer than 4 seconds

  • Fixed After a fax was sent, the name of a recipient selected via the telephone book was not displayed in the call list

  • Fixed Editing of door intercom stations sometimes led to loss of email notification for door intercom stations

  • Fixed After importing answering machine settings including saved messages into another FRITZ!Box model, sometimes the imported messages could no longer be played back

  • Fixed Ring sequences incorrect for the country setting "Australia"

  • Fixed Sporadic loss of schedule settings for the answering machine after updating FRITZ!OS

  • Fixed No Registration of telephone numbers on a Mesh Repeater behind a FRITZ!Box 6890 operating as a Mesh Master


  • Improved Reworked "Wi-Fi / Wi-Fi Channel" page

  • Improved Improved auto channel function after detection of interference sources (5-GHz band)

  • Improved Improved messages on Wi-Fi under "System / Event Log"

  • Improved Detection of multiple parallel WPS activations improved

  • Improved New message under "System / Event Log" when the maximum number of wireless repeaters is exceeded

  • Improved Naming of Wi-Fi guest access (SSID, preassigned) depends on selected language

  • Change In "Mesh Repeater" operating mode, only Wi-Fi networks with visible names are shown for selection of the Mesh Master

  • Fixed Vulnerabilities in the processing of incoming fragmented frames and aggregated MPDUs (A-MPDU) fixed ("Fragatttack")

  • Fixed Erroneous display of bandwidth in connections with HUAWEI P30 corrected

  • Fixed After radar detection with reduced power mode (Green AP), initialization problems occurred in combination with 160 MHz bandwidth (VHT160)

  • Fixed After a FRITZ!OS update, the "Wi-Fi / Wi-Fi Channel" page did not show any Wi-Fi channels, and in some circumstances, no Wi-Fi networks in the environment

  • Fixed Activation of WPS immediately after the Mesh Master was started frequently led to non-DBDC uplinks to Mesh Repeaters

  • Fixed Incorrect message under "System / Event Log" for WPS during DFS wait time


  • Improved Improved indications about adoption of settings enabled for a FRITZ!Box as Mesh Repeater

  • Fixed Incorrect formatting in the mobile view of the "Mesh Settings" page on a FRITZ!Box in "Mesh Repeater" mode

  • Fixed Settings for Wi-Fi schedule could not be changed under some circumstances, if the setting "FRITZ!Box as a Mesh Repeater" was used

  • Fixed For a FRITZ!Box configured as Mesh Master, but not as router (DHCP server), name and IP address of the router could not be changed

  • Fixed Display of Wi-Fi channel bandwidth in the user interface on the Mesh Master was sometimes different on the Mesh Repeater


  • Improved Smart Home: Improved - Template for fast changes to color settings and brightness on FRITZ!DECT 500

Home Network:

  • Improved Faster display of network connections in very large networks

  • Improved When leaving the device details a message concerning changed device names is displayed only if the name was actually changed

  • Change When an individual name is set for the FRITZ!Box, the name of the working group for home network sharing ("USB/Storage") remains unchanged

  • Fixed The section for blocking devices was displayed in the device details of guest devices even though this function is reserved for home network devices

  • Fixed Changed IP settings of the FRITZ!Box were not offered for printing

  • Fixed Time synchronization (NTP) was instable in certain scenarios


  • Improved In fritz.nas, multiple files can be selected using the shift key

  • Fixed Home network sharing of a network drive (SMB) was not visible under Network in Windows Explorer

  • Fixed Data transmission via network drive function (SMB) failed with the Windows error message "STATUS_NO_MEMORY"

  • Fixed Online storage was not always reconnected after automatic DSL disconnection

  • Fixed No network drive connection (SMB) was possible with macOS Big Sur Version 11.3


  • Improved Configuration wizard can be interrupted and resumed

  • Improved Various usability improvements in the First Configuration wizard

  • Improved Status overview page within the first configuration

  • Improved Security query when leaving a page without saving changed settings

  • Improved Saving and restoring settings now includes telephony data from the internal storage of the FRITZ!Box (ring tones, telephone book pictures, voice messages)

  • Improved After support data have been sent to AVM, a second dispatch can be started immediately without any wait time

  • Improved A password can be made visible during entry (eye icon) in the user interface

  • Improved Corrected details in the "Diagnostics / Function" for Mesh and USB

  • Change Offer to switch to "Level III: Notify me about new versions of FRITZ!OS and install new versions automatically (recommended)" is now offered after updating only when "Level II: Notify me about new versions of FRITZ!OS and install necessary updates automatically" was previously configured

  • Change The option to log in to a FRITZ!Box (user interface) without a password, which was not recommended, is no longer supported *1

  • Change If "only with the FRITZ!Box password" was set up for logging in to the user interface, a FRITZ!Box user with the name "fritz" and a random four-digit number together with the FRITZ!Box password will be created automatically. To log in to the user interface in the home network, entering the FRITZ!Box password is still sufficient. *2

  • Fixed FRITZ!Box users could not be sorted in the overview

  • Fixed Access profiles with blocked applications in parental controls were not available when settings were restored

  • Fixed Number of messages in "System / Event Log" was too restricted in some areas

  • Fixed Display of installation date for the last update was incorrect in certain scenarios

*1. The home network login mode without a password, which is not recommended, is no longer supported. For the initial access to the user interface after the FRITZ!OS update, the user needs to assign a FRITZ!Box password (additional confirmation required)

*2. Automatic generation of a user according to the naming structure fritz and a random four-digit number if login before the update took place only with the FRITZ!Box password. Important information for developers of apps that would like to register with FRITZ!Box can be found at avm.de/service/schnittstellen

New functions of FRITZ!OS 7.21


  • NEW With parental controls enabled, settings and ticket entry for the device to be accessed are displayed when the user interface is opened
  • NEW Support for encrypted resolution from domain names to IP addresses (DNS over TLS)
  • NEW Simplified configuration of internet connection on 1&1 lines (zero-touch)


  • NEW Support for VDSL Long Reach


  • NEW Encryption according to the new WPA3 standard (including Wi-Fi guest access, connections to Mesh Repeaters and internet access via Wi-Fi with SAE)
  • NEW An open Wi-Fi network can be offered at the Wi-Fi guest access, in which only data are transmitted in encrypted form (Enhanced Open/Opportunistic Wireless Encryption, OWE)
  • NEW 160-MHz channel bandwidth is now always active in the 5-GHz band, providing for very high transmission rates with compatible wireless devices
  • NEW "Zero Wait DFS" (no waiting times for radar events) also possible for 160 MHz bandwidth (5-GHz band)


  • NEW Mesh auto-channel: Accounts for the wireless environment of the Mesh Repeater in selecting the best Wi-Fi channel for the entire Mesh


  • NEW Support for online contacts from Apple (iCloud), Telekom Mail, and CardDAV providers
  • NEW Support for encrypted telephony (TLS and SRTP) for Deutsche Telekom, Easybell and dus.net


  • NEW Nine new ring tones to choose from
  • NEW Smart telephone book displays matching suggestions even during number entry
  • NEW Sound settings for playing back web radio stations and to improve the speech quality of telephone calls
  • NEW Start screen to display the temperature of a compatible Smart Home device in the home network (for instance, FRITZ!DECT 200, FRITZ!DECT 30x, FRITZ!DECT 440)

Home Network:

  • NEW Network passwords for the powerline network can now be changed on FRITZ!Powerline devices connected directly (via LAN)

Smart Home:

  • NEW Smart Home: NEW - Reworked Smart Home pages on the FRITZ!Box user interface
  • NEW Smart Home: NEW - Synchronization of the temperature setting, the boost mode and open window detection within a group of radiator controls
  • NEW Smart Home: NEW - Display of total consumption (kWh) of the past two years for the smart plugs FRITZ!DECT 200 and 210
  • NEW Smart Home: NEW - The "Adaptive Heating" feature of the FRITZ!DECT 301 makes the configured temperature available at the desired time
  • NEW Smart Home: NEW - Supports the FRITZ!DECT 500 LED light
  • NEW Smart Home: NEW - Supports the four-button switch FRITZ!DECT 440
  • NEW Smart Home: NEW - Supports the DECT ULE/HAN FUN roller blinds profile


  • NEW The SMBv3/v2 protocol of the Windows network drive function is supported by default; optionally, SMBv1 can still be supported
  • NEW Media contents like images, music and videos are indexed automatically with "Refresh index automatically" and made available to the home network


  • NEW Time period for automatic updates can be defined
  • NEW NEW - Users supported in becoming acquainted with FRITZ!Box functions with welcome page


  • NEW Support for encryption according to the WPA3 standard (SAE)
  • NEW Optimization of repeater connection with a FRITZ!Box with support for Wi-Fi channels 160 MHz wide

Further Improvements of FRITZ!OS 07.21

Mobile Communication:

  • Improved Improved New software for the mobile modem with improved stability of the mobile connection

  • Improved "Reconnect" deregisters all telephone numbers before clearing the existing internet connection

  • Improved MTU size configurable for the mobile connection

  • Change Existing sessions are maintained on the secondary Internet connection for a maximum of five minutes after re-fallback

  • Change "Reconnect" forces a new IPv6 address assignment

  • Fixed Avoidance of failures of certain SIM cards that use a SIM toolkit with low error robustness

  • Fixed No mobile connection possible with SIM cards with tariffs without LTE support via UMTS/HSPA+ (3G)

  • Fixed Not all of the settings for the SMS message push service could be changed

  • Fixed Received SMS messages were sometimes rendered with only partial text or with an incorrect time stamp in the push service and in "System / Event Log"


  • Improved Interoperability for supervectoring 35b
  • Change Resdesigned display of the "DSL Information" in the user interface


  • Improved Message upon failed ticket entry (parental controls)

  • Improved Display and modification of the IPv6 Interface ID under "Home Network / Network / Network Connections"

  • Improved Any domain name can be used to address a VPN remote peer, not just MyFRITZ! domain names

  • Improved NetBIOS permission can be configured individually for a single VPN connection

  • Improved Ticket for parental controls can be entered before start of online block, so that usage time can be extended without interruption

  • Improved Additional links from the user interface in the online help for IPv4 and IPv6 routes under "Network Connections"

  • Improved Optimized display of the DSL/Fiber information in the user interface

  • Improved IPv6 prefix delegations and IPv6 subnets are displayed under "Home Network / Network / Network Settings"

  • Improved IP address range for guest network increased to up to 253 devices

  • Improved Incorrect configuration by using the same network address on both sides of a LAN-LAN linkup for VPN prevented

  • Improved Access to the myfritz.net domain for a downstream FRITZ!Box registered with MyFRITZ! allowed from the home network

  • Improved Greatly improved performance for VPN

  • Improved In the context of encrypted name resolution (DNS over TLS, DoT), SNI (Server Name Indication) is supported

  • Improved Support for multiple DNS queries over a single TCP connection

  • Change Unnecessary settings option for connection speed removed from "IP Client" mode

  • Change Button for changing the access profiles under the Parental Controls Overview in the user interface

  • Change First configuration simplified by removing the double query about DSL or WAN connection

  • Change Kabel BW and Unitymedia removed from provider list

  • Change "Emule" protocol removed from selection for port sharing

  • Change IP compression (data compression) is no longer supported in VPN connections

  • Fixed Option for "PPPoE Passthrough" missing under "other providers"

  • Fixed "Diagnostics / Function" showed wrong error message for MyFRITZ! registration for FRITZ!Boxes in IP client mode

  • Fixed Defective links behind "MyFRITZ!" under "Diagnostics / Security"

  • Fixed VPN connection name was not displayed in network connections and Mesh Overview

  • Fixed In the VPN overview table "local network" was missing and "remote network" left empty

  • Fixed Devices that are connected to a downstream router via IPv6 prefix delegation received no IPv6 internet connection when parental controls were enabled

  • Fixed Devices that are connected to a downstream router via IPv4 static routes received no IPv4 internet connection when parental controls were enabled

  • Fixed Port sharing for different devices with the same name could not be created

  • Fixed Adaptations of DSL line speed were no longer accounted for after restart

  • Fixed Occasional restarts of FRITZ!Box during many parallel FTP transmissions over WAN

  • Fixed Problems with umlauts in the parental control filter lists

  • Fixed Guest network lock in the parental controls did not lock reliably

  • Fixed No automatic Wake on LAN (WoL) via VPN

  • Fixed Prioritization settings for devices with the "Everything except surfing and mail" access profile were no longer applied after rebooting


  • Improved Redesigned the print output of information on the wireless guest access

  • Improved "WPA3" option added to the encryption of the FRITZ!Box in "Mesh Repeater" operating mode

  • Change Reworked information page (for instance, after changes to Wi-Fi configuration)

  • Change WPS/PIN method removed

  • Change Outdated WPA/TKIP encryption removed

  • Fixed "Wireless / Guest access": Duration for disabling automatically could not be changed

  • Fixed Sorting by MAC addresses in "Wi-Fi / Wi-Fi Network / Security" did not work

  • Fixed "Delete" button for devices was displayed even if the device could not actually be deleted

  • Fixed PMF option no longer offered for "WPA/TKIP" encryption selection

  • Fixed Detection of interference did not work under certain rare circumstances

  • Fixed Time stamp "Wireless LAN channels used" corrected (5-GHz band)

  • Fixed Incorrect entry no longer appears in the "Event Log" when individual wireless bands were enabled or disabled manually on a FRITZ!Repeater 3000


  • Improved Rendering of DHCP host name, media server name and SMB name on Mesh Repeaters improved

  • Improved Improved text for configuration of a FRITZ!Box as a Mesh Repeater

  • Improved Better detection of terminal devices that cannot be rerouted via Mesh steering

  • Improved Notification in FRITZ!Box log when a network loop is created (for instance, simultaneous LAN and wireless connection to the same device)

  • Improved Notification in FRITZ!Box log when a network loop is created (for instance, simultaneous LAN and wireless connection to the same device)

  • Change On a FRITZ!Box configured as a Mesh Repeater, the option for adopting the settings in the Mesh is offered only after Mesh was enabled on this FRITZ!Box

  • Fixed Display of FRITZ!Powerline 520/530E in the Mesh connection diagram was not correct

  • Fixed In certain cases a FRITZ!Repeater was displayed twice in the "Mesh Overview" of the FRITZ!Box

  • Fixed When telephony in the Mesh is used, telephony registration of a FRITZ!Box used as a Mesh Repeater was sometimes prevented by the Mesh Master

  • Fixed For wireless guest access the steering characteristics (11k/v) of wireless devices were not taken into account correctly (Google Pixel 2 and SAMSUNG S10)


  • Improved Calls from door intercoms (including images) added to "Calls" push mail

  • Improved "Always register via an internet connection" option added for SIP trunk providers

  • Improved More detailed messages for security-relevant changes to settings

  • Improved New telephony providers added for the country setting "Italy": TIM, Fastweb, Vodafone and others

  • Improved Telephony providers O2, PYUR and multiple SIP trunk providers added

  • Improved Telephone numbers can be assigned to multiple answering machines, so that up to ten different greetings can be scheduled to play on one telephone number

  • Improved For operation of ISDN devices, advanced settings are offered under "Telephony Device" in the user interface

  • Improved The call list in the user interface offers a separate view for rejected calls

  • Improved For company lines (SIP trunk and SIP DDI lines), a settings offered to support setting any telephone numbers desired (CLIP no screening)

  • Improved Integrated fax function supports sending up to ten pages of text

  • Improved If a storage location is set in the fax function of the FRITZ!Box, sent faxes will be stored there along with received faxes

  • Improved New methods for call diversion to external destinations supported for certain telephony providers (302 - Moved temporarily)

  • Improved Automatic configuration of telephone numbers for provider Telekom adapted to the latest network demands

  • Improved Increased robustness of telephony against partial failure of network infrastructures when TCP internet protocol in use

  • Improved Better interoperability with Swiss provider sipcall

  • Improved Maximum length for hold announcement of answering machine increased from 8 to 30 seconds

  • Improved Transfer/Forwarding of calls supported (without a query) on IP telephones to other telephones connected with the FRITZ!Box

  • Change New missed calls are no longer displayed with a flashing "Info" LED on the FRITZ!Box

  • Change New fax and email messages for answering machine services (like the Telekom SprachBox) are no longer displayed with a flashing "Fon" LED on the FRITZ!Box

  • Fixed Under the "SIP trunking" selection, telephone numbers could not be created for providers that could be selected for another telephony provider using the same registrar

  • Fixed Under the "Other Provider" selection, telephone numbers could not be created for providers that could be selected for another telephony provider using the same registrar

  • Fixed Automatic fax recognition for the telephone numbers of the analog landline could not be set up

  • Fixed Changes to the settings for the proxy server and STUN server were not adapted in the telephone numbers

  • Fixed When the fax function was started in the user interface, only an empty page was displayed if there was an entry without a telephone number in the telephone book

  • Fixed Telephone numbers set to "Only via IPv6" could not be switched to use IPv4 without an IPv6 internet connection

  • Fixed When preparing a fax in the integrated fax machine for sending, the contents in the "To" field were deleted after selecting a telephone book entry and switching to another input field

  • Fixed For IP door intercom systems with multiple doorbells, sometime the desired ring tone was not used

  • Fixed When listening to messages on the integrated answering machine with an ISDN telephone, the key shortcut for callback did not work

  • Fixed No internet connection with LTE mobile communications dongles from Huawei when using a rate without LTE support


  • Improved Telephone book display for FRITZ!Fon C4, C5 and C6 now faster
  • Improved Setting up call blocking in the handset is now easier
  • Improved Display of FRITZ!Box events with "OK" button in the "FRITZ!Box" start screen
  • Improved Pictures can also be browsed with up/down rocker

Home Network:

  • Improved "Mesh" added to properties in the network connection overview
  • Improved Mesh icon shifted in the Mesh table from the "Connections" column to the "Properties" column
  • Improved Reliable display of new AVM Powerline products in the FRITZ!Box home network
  • Improved More reliable indication of low powerline data rates in the FRITZ!Box home network
  • Change "Smart Home" menu moved to top menu level and "DECT" menu moved to the telephony menu

Smart Home:

  • Improved Fiber: Improved - Optimized display of the "Fiber Information" in the user interface

  • Change Smart Home: Change - Display of low battery level on Smart Home devices now only on the FRITZ!Box user interface, by push service, and on connected FRITZ!Fon devices

  • Fixed Smart Home: Fixed - Wrong target temperature when accessing the FRITZ!Box via MyFRITZ!

  • Fixed Smart Home: Fixed - Template for radiator control did not work if heating was off during 01/01 until 31/12


  • Improved When creating new release links on fritz.nas, the user is informed if the FRITZ!Box is not accessible from the internet

  • Improved The "USB Devices" and "Storage (NAS)" pages on the user interface were integrated into "USB/Storage" and simplified

  • Change "USB Devices" and "Storage (NAS)" menus combined under "Home Network / USB/Storage"

  • Fixed A folder released for sharing was not rendered legibly under "Sharing"

  • Fixed When uploading a file to fritz.nas by Drag & Drop, each file was uploaded twice

  • Fixed The time information "Changed On" was given incorrectly on fritz.nas if the language was not set to German in the FRITZ!Box


  • Improved Device name displayed the same everywhere in the Mesh
  • Improved "FRITZ!Box Info" push service now includes an option for information on the "Home network"
  • Improved New menu icons for "Overview" and "Smart Home"
  • Improved "Reset" function in details of network devices for deleting all settings for this device
  • Improved Diagnostics check expanded to include "Mesh", "Internet", "DECT" and "Wi-Fi"
  • Improved FRITZ!Box support page now includes option to send support data directly to AVM
  • Improved Separate restoration of settings for the Smart Home and Telephony areas
  • Improved Modernized display of "LEDs" and other symbols throughout the user interface
  • Improved Upon the first restart after the update, activation of automatic updates is offered (auto-update level III)
  • Improved Warning on the FRITZ!Box Overview on selected settings that are not recommended
  • Improved Page structure simplified in many areas of the user interface to improve usability
  • Improved Reworked concept for navigation in the wizard for first configuration
  • Improved Overview of authorized apps in the "System / FRITZ!Box Users" area now also includes rights and time of last login
  • Improved Update information is included in event log (visible only with the next update)
  • Improved Update process optimized for automatic updates (silent update, task 60018)
  • Change WAN port can be switched as 5th LAN interface if this is not needed as a WAN connection to the internet provider
  • Change In the factory settings, the WAN port always works as a WAN interface (an existing setting as 5th LAN interface for this connection is not changed by the update)
  • Change Update setting upon delivery is now auto update level III (updates are installed automatically)
  • Change User with the name "ftpuser-internet" is deleted
  • Change "The strength of a newly assigned password must be rated at least "medium"


  • Improved More detailed message about security-relevant changes under "System / Event Log"
  • Improved Display of the ports that can be reached from the home network under "Diagnostics / Security"
  • Change Waiting for the additional confirmation of a change is indicated by the flashing of all LEDs

New Features in FRITZ!OS 7.13

Mobile communication:

  • NEW Push Service for received SMS


  • NEW A DSL data rate considerably higher than the speed of the internet connection given by the provider can now be reduced to a lower value in order to improve stability


  • NEW Mesh WiFi steering can automatically direct devices (smartphones or computers, for instance) to the best Mesh WiFi Repeater (access point steering)
  • NEW The FRITZ!DECT 400 Smart Home switch can be used on every FRITZ!Box in the Mesh
  • NEW All FRITZ!Boxes in the Mesh now have a shared telephone book at their disposal


-NEW Support for SIP trunking from Deutsche Telekom, dus.net, easybell, envia Tel and EWE/swb/osnatel


  • NEW Support for DECT door intercom systems (manufactured by Telegärtner)


  • NEW Very easy to offer wireless guest access: Display the account data or initiate WPS on the handset
  • NEW Block incoming telephone calls directly from the handset call lists
  • NEW Fast accessibility to Smart Home devices as favorites
  • NEW Configure and delete call diversion settings directly from the handset menu

Home network

  • ** NEW** Graphic display of home network connections when editing the connection of a network device

Smart Home:

  • NEW For the FRITZ!DECT 400 Smart Home switch, pressing a button longer can trigger a second switching action
  • NEW Now a "Template" option is available as an additional switching option for FRITZ!DECT 400


  • NEW FRITZ!Box sends information on certain events to the email address of your MyFRITZ! account
  • NEW All LEDs on the device can now be switched off in the user interface
  • NEW Display of the available updates for the FRITZ! products connected in the home network on the Overview page

With each FRITZ!OS update, AVM also updates its security functions. Therefore we recommend performing the update for all devices.

Further improvements in FRITZ!OS 07.13

Mobile communication:

  • Fixed SMS reception service not working for alphanumeric sender IDs and when using certain codes
  • Fixed Mail address for SMS push service cannot be changed


  • Fixed Dismantling with the subsequent re-establishment of the standby LTE connection in fallback mode sometimes led to the loss of the VPN connection via DSL, although DSL is still available
  • Fixed Deactivation of the NETBIOS filter for VPN connections not effective

Further improvements in FRITZ!OS 07.12

Mobile communication:

  • Improved New software for the mobile modem with various optimizations for establishing a connection and for improved stability of the mobile connection

  • Improved Calls to the mobile phone number of the SIM card no longer lead to a change from LTE to UMTS (please have in mind that FRITZBox 6890 LTE does not support the mobile phone number of the SIM card)

  • Improved APN updated in provider profile Vodafone Italia

  • Fixed DNSv6 servers were not persisted


  • Improved Approximate line length displayed in the DSL Overview
  • Improved 35b interoperability to certain Broadcom remote sites improved
  • Improved Certain information adapted on DSL pages
  • Change For VDSL vectoring connections, manufacturer of the DSL central exchange (DSLAM) named in the user interface


  • Improved Now domain names can be specified for VPN connections that are resolved via the tunnel

  • Improved For VPN connections, the remote network is displayed in the network even after the connection has been cleared

  • Improved Now any names can be specified for VPN connections

  • Improved A VPN connection can now transfer the entire network traffic (VPN full tunneling, default route via VPN tunnel)

  • Improved Better VPN connection negotiation

  • Improved VPN LAN-LAN linkup of a FRITZ!Box on a DS Lite connection possible to IPv4 remote sites

  • Improved Various changes for importing a VPN settings file

  • Improved More devices possible in the guest access (and wireless hot spot): assigned IP addresses now reserved for only 6 hours (DHCP lease time, configurable)

  • Improved FRITZ!Box no longer repeats an attempt to register with MyFRITZ! if the confirmation link sent by email was not clicked

  • Change For activation of internet access to the FRITZ!Box via HTTPS, TCP number selected randomly

  • Change Transfer rate of the internet connection on the WAN port entered in Mbit/s instead of Kbit/s

  • Change For connections from Telekom, "Zuhause Start" connections now called "MagentaZuhause Regio Tarif"

  • Fixed "Standard" and "Guest" access profiles, configurable under Filters, contained a budget setting that was not supported

  • Fixed Settings from the window for VPN settings could not be copied

  • Fixed Under port sharing it was not possible to enter the IPv6 interface ID 0:0:0:0:*

  • Fixed Switch of type of connection from IP client to internet router generated illegal IP settings

  • Fixed Releasing a port on a dual-stack connection (IPv4 and IPv6) for sharing with a device configured only for IPv4 sometimes failed

  • Fixed In rare cases a device in the wireless guest access via a repeater was not assigned an IP address

  • Fixed Misleading message úpon disabling internet access to the FRITZ!Box via HTTPS

  • Fixed Port sharing for destination IP addresses in the form 192.168.*.127 was not possible

  • Fixed Port sharing for IPv6 could not be enabled for internet connections with a prefix length /64

  • Fixed VPN LAN-LAN linkup to fixed IP addresses did not work (IKE error 0x2005)

  • Fixed Additional characters transmitted during download of the FRITZ!Box certificate under FRITZ!Box services

  • Fixed Registration with MyFRITZ! could be instable when upper-case letters were used in the email address of the MyFRITZ! account

  • Fixed With IPv6 and FRITZ!Box users without the right to access from the internet, access from the home network via FTP to storage (NAS) shared in the home network could fail

  • Fixed Guest network block was not applied in individual access profiles configured in parental controls

  • Fixed Info-LED shines red after fallback to LTE despite successfully established fallback internet connection (now only takes place if DSL and LTE have not been available for at least 1 hour)

  • Fixed FRITZ!Box does not receive DNS servers with existing LTE connection to Omnitel Pronto Italia / Vodafone (other providers with identical network configuration were also affected)


  • Improved The wireless radio network table of known wireless devices was reworked

  • Improved For devices that support the wireless protocols 802.11v/k (smartphones or computers, for instance), improved automatic steering into the 2.4-GHz or 5-GHz band (band steering)

  • Change For wireless devices in the radio network, the property 802.11k displayed only when the scope of performance is sufficient (beacon report)

  • Change New report in event log on problems with "protected logins from wireless devices (PMF)"

  • Change The radio channel settings option for automatic steering of wireless devices now also offers Mesh WiFi steering

  • Fixed "Wireless LAN coexistence" option now works reliably again (2.4 GHz)

  • Fixed When one wireless frequency band is switched off, the radio network of the other frequency band is no longer interrupted

  • Fixed Line breaks on the captive portal for the wireless guest access were not saved

  • Fixed Wireless LAN settings (channel, wireless standard, etc.) no longer selectable when disabled

  • Fixed On the "Wireless / Radio Network" page, wireless devices that are not connected are no longer listed in the table only with a marking for the 2.4-GHz band


  • Improved Display of important notifications for secure, reliable operation on all FRITZ!OS products in the Mesh (with red "Info"' LED and on start page)

  • Improved Smart Home templates can now be used on every FRITZ!Box in the Mesh This allows actions like "Everything off" to be applied to all FRITZ!Boxes in the Mesh

  • Improved Information on Mesh proved in the FRITZ!Box push service mail

  • Improved New message in event log on wireless devices that were reregistered because of Mesh steering

  • Improved Notice on Mesh Overview about FRITZ!Repeaters or FRITZ!Powerline devices that can still be integrated into the Mesh

  • Improved Home network access of the FRITZ!Repeater 3000 optimized for performance in wireless bridge mode

  • Improved The name assigned to a Mesh Repeater in the Mesh or Network Overview is applied as its "Repeater name". The user interface of the Mesh Repeater can then be accessed with http://assigned_name

  • Change Mesh designation of the Powerline devices without wireless function that participate in the Mesh

  • Change Device names of FRITZ!OS devices in the Mesh are adopted from the Mesh Master as push service sender names

  • ** Change** During configuration of telephony in the Mesh, the "landline enabled" setting on the Mesh Repeater is switched off

  • Fixed Distribution of wireless LAN settings in the Mesh erroneous in rare situations

  • Fixed The battery status of Smart Home devices was occasionally displayed incorrectly on the user interface of a Mesh Repeater

  • Fixed If a FRITZ!Box configured as a Mesh Repeater was removed from telephony, this change was not applied until the Mesh Master restarted

  • Fixed Telephony messages (Message Waiting Indication, MWI) were not passed on to the Mesh Repeater with the right dialed telephone number


  • Improved Improved handling of emergency calls in Italy

  • Fixed No transmission of voice data for incoming connections with the provider sipgate via mobile connection

  • Fixed Type of an existing call diversion could not be changed from the initial setting

  • Fixed In isolated cases, conversations were incorrectly negotiated with voice compression

  • Fixed Telephony messages (Message Waiting Indication, MWI, RFC 3842) were switched off when adding/editing internet telephone numbers

  • Fixed Error in display of contact groups from Google contacts when their names contained "&"

  • Fixed While copying an existing telephone book the setting for "important person" was not adopted


  • Improved Titles from the media player played on the handset can now be fast forwarded and rewound

  • Improved https supported even for live images, for instance for images from a door intercom system

  • Improved Playback compatibility of https web radio and podcast streams

  • Improved Faster zapping between radio stations

  • Fixed Occasional rhythmic sound disruptions when playing web radio

Home network

  • Improved Change to radio network name now optional when setting the FRITZ!Box name

  • Change Podcasts preset for the media server updated. Also applies to FRITZ!Fon

  • Fixed Failure to set up a home network connection for certain interfaces in the MyFRITZ!App

  • Fixed Problem with DNS resolution of local home network devices when using DHCP without host name

  • Fixed In some rare cases it was not possible to set LAN ports to 100 Mbit/s (Green mode)

Smart Home:

  • Improved Better illustrations of temperature profile in push service (email)

  • Change Updated the AHA-HTTP-APU programming interface. https://www.avm.de/schnittstellen

  • Fixed In rare cases the sunrise/sunset function did not work reliably

  • Fixed Error when setting the temperature for a group


  • Improved Optimized treatment of NTFS-formatted storage media

  • Fixed In some cases new files were indexed incompletely or not at all


  • Improved Browser compatibility optimized for saving table renderings locally

  • Improved User interface permanently saves the desired sorting of a table by column

  • Improved Dual-band wireless devices were displayed in the overview only with 2.4 GHz

  • Change Push service sends important messages from the FRITZ!Box only to the recipient of the FRITZ!Box Info mail

  • Change The FRITZ!Box user ftpuser is no longer created ex works (or after restoring the factory settings). One FRITZ!Box user must be created for sharing of storage media (NAS) in the home network

  • Change Updated the TR-064 programming interface. See http://www.avm.de/schnittstellen

  • Fixed Update with FRITZ!OS file could fail with an IPv6 connection to the FRITZ!Box

  • Fixed No import of settings possible when "Magenta Cloud" was enabled


  • Change Support of outdated TLS 1.0 standard to secure FRITZ!OS services in the server role switched off
  • Change Length of DH parameter extended to 2048 bit for FRITZ!OS services in the server role

New Features in FRITZ!OS 7.00


  • New Stubs at the DSL connection can be detected and displayed
  • New Possibility to record DSL added


  • New Parallel internet access via mobile networks and DSL/WAN
  • New Additional fallback options for internet access
  • New The online meter records only mobile data, and you can set a budget for mobile data, allowing for DSL/WAN fall-back if your limit is reached
  • New Separate online monitors for DSL/WAN, as well as mobile data
  • New Detailed status information about current internet connections on the "Online Monitor" page
  • New Register for regular status updates for your FRITZ!Box (MyFRITZ! report)
  • New MyFRITZ! internet access to the FRITZ!Box without a warning from the browser (SSL certificate from Let's Encrypt)


  • New Option to prevent VOIP registration via DSL/WAN (useful for fall-back scenarios)
  • New The FRITZ!Box configured as Mesh Master transfers your telephone numbers to an additional FRITZ!Box as a Mesh Repeater.
  • New Scheduling function for call diversion
  • New Telephone numbers can be blocked or added to your contacts directly from the call list
  • New Support for Deutsche Telekom SIP Trunking (DeutschlandLAN SIP Trunk / SIP Trunk Pooling)


  • New FRITZ!Fon: Phone number display shows region and country area codes
  • New FRITZ!Fon: now five different ring tones of your own can be selected for FRITZ!Fon
  • New FRITZ!Fon: start screen event log: received faxes are displayed
  • New FRITZ!Fon: "Smart Home" start screen now scrollable to display more Smart Home devices
  • New Expanded registration mode for (re-)registration of all devices known to the FRITZ!Box, for instance, after switching to a new FRITZ!Box
  • New FRITZ!Box supports software updates for compatible handsets from other manufacturers (CAT-iq SUOTA)
  • New FRITZ!Fon supports updates for FRITZ!Box (can also be protected with a PIN)
  • New Separate volume controls for the alarm sound
  • New FRITZ!Fon media player: save and load playlists as .xsfp files via FRITZ!NAS
  • **New ** Skip to next/previous track when playing podcasts on your FRITZ!Fon
  • New Support for Speedphone 11 from Deutsche Telekom

Home network:

  • New User interface with new "Home Network / Mesh" menu for all settings concerning Mesh
  • New Mesh Home Network Overview also shows telephone and Smart Home connections with complete topology and connection quality
  • New In the factory settings, a second FRITZ!Box connected via Ethernet becomes a Mesh Repeater at the push of a button (WPS)
  • New Switch for IP client or router operation in the "Network Settings" area
  • New Switch for the function of the FRITZ!Box in the home network (Mesh operating mode) as Mesh Master or Mesh Repeater in the "Home Network / Mesh / Mesh Settings" and "Wireless" areas
  • New Mesh events added to the event messages
  • New The settings for push services, auto updates and AVM services are applied to the entire Mesh WiFi

More information on the new features for Mesh is presented at "New features for Mesh" More information on configuration and using Mesh is presented at en.avm.de/mesh-faq


  • NEW With a "FRITZ! Hotspot" it's easier than ever to give guests WiFi access in public places such as bars, restaurants, medical practices etc. For details, see "Wireless / Guest Access".
  • New Improved wireless security through support of activated Protected Management Frames (PMF)
  • New Support for 160-MHz bandwidth (only 7590/7580/6590)
  • Improved No more DFS waiting times (RADAR) on the 5-GHz band through the new "Zero Wait DFS" feature (7590, 7580, 6590)

Smart Home:

  • New Support for DECT ULE/HAN FUN
  • New With Smart Home templates you can create different Smart Home device switching schedules for various occasions (like holidays, working shifts, or vacations), and switch between them at the click of a button

With each FRITZ!OS update, AVM also updates its security functions. Therefore we recommend performing the update for all devices.

Further improvements in FRITZ!OS 7.03

Mobile communication:

  • Resolved 2nd pdn with an default bearer cannot established if the 1st pdn is already using an default bearer


  • Improved Port forwardings for the Internet connection can now be used on the secondary or fallback connection after the primary Internet connection has failed
  • Improved VPN connections can continue to be used over the fallback connection after the primary Internet connection has failed
  • Resolved In seldom cases, data could flow over the fallback connection, even if the primary Internet connection was still available
  • Resolved In some cases with WAN / Mobile Fallback configuration, the fallback connection was always used immediately, even though the WAN connection was available
  • Resolved Despite the configured alternative DNS server, the user interface still displays the default DNS server as used


  • Improved LTE voice connection (2nd PDN) can be actively used, even if the primary Internet connection exists
  • Resolved No VoIP registration in cases with long-lasting Internet connection setup (only on LTE boxes)
  • Resolved Voice data (VoIP) are transmitted over the wrong Packet Data Network (PDN)
  • Resolved G.729 in some cases not supported correctly (TIM)


  • Resolved In seldom cases a stability problem could occur if the WiFi guest function was used

Further improvements in FRITZ!OS 7.01

Mobile communication:

  • Improved New firmware for the mobile telephone modem with various optimizations for connecting and for improved stability of the mobile connection


  • Improved Option for checking and, if necessary, remedying detected interference from powerline to VDLS


  • Improved Improvements for supervectoring (35b)


  • Improved Display of internet connections on the "Overview" page also includes WAN connections

  • Improved Simplified display for internet connections on the "Overview" page under "Connections"

  • Improved Function for removing the FRITZ!Box from the MyFRITZ! account (myfritz.net)

  • Improved Optimizations for data throughput

  • Improved Optimizations for DNS resolution

  • Improved Optimized registration with MyFRITZ! (myfritz.net) also possible without enabling MyFRITZ! internet access, under "Internet / MyFRITZ! Account"

  • Improved SHA-2 support for VPN connections

  • Improved Filter for port 25 (unsecured mail sending) also effective for the Guest Access (Wireless LAN/LAN)

  • Change Connections to 1&1 lines also with Internet Protocol version 6 (IPv6 and IPv4 Dual Stack)

  • Change Connections to Vodafone lines also with Internet Protocol version 6 (IPv6 and IPv4 Dual Stack)

  • Change Type of internet connection "existing connection over wireless LAN" also supports non-encrypted wireless LAN

  • Change Parental controls no longer differentiate between Windows users

  • Change Devices blocked for internet use in the parental controls can be reached via VPN

  • Change Internet service provider "GMX" removed

  • Change FRITZ!Box devices in IP client mode (as for connection to existing network) can be registered with myfritz.net

  • Change Certificate signed by letsencrypt.org (for MyFRITZ! addresses)

  • Resolved "Default user already exists" message when configuring parental controls

  • Resolved Possible circumvention of time limits defined in parental controls

  • Resolved Circumvention of parental controls for certain blocked websites

  • Resolved The LAN ports for VPN were switched for LAN-LAN linkup

  • Resolved Improved VPN interoperability

  • Resolved VPN user connections not displayed in the home network overview

  • Resolved MyFRITZ! FTP links corrected

  • Resolved MyFRITZ! access or device with MyFRITZ! access could not be deleted under certain circumstances

  • Resolved Error while entering an already assigned IP address for a new device for port sharing

  • Resolved No IPv4 port sharing for devices with IPv6 interface ID during IPv4 internet connection without IPv6

  • Resolved IPv6 NAS sharing link could not be used

  • Resolved Google DynDNS service not supported

  • Resolved Static IP address with /31 network mask not possible


  • Improved Redesigned administration of call blocks for incoming calls (telephone numbers)
  • Improved Optimized management of telephone books


  • Improved Playback of web radio and podcasts with HTTPS addresses on AVM devices (only if contents can be played back without encryption)

  • Resolved Speedphone 500 could no longer make calls

Home network:

  • Change Connection Statistics area for the powerline network moved from the Network Device Details to the "Contents / FRITZ!Box Support" area

  • Resolved Possible error message (Error code 1) when IP address entered manually in the Device Details


  • Improved DFS wait times in the 5-GHz band optimized

  • Improved Band steering for wireless clients that support the 802.11v/k standards

  • Improved Display of wireless standards 802.11k and 802.11v as "Signal Properties" (for band steering)

  • Improved Display of frequency bands on "Wireless / Radio Channel" page in the "Other radio networks in your vicinity" list

  • Improved Improved changing of SSID in Wireless Assistant during first configuration

  • Resolved Selection of DFS channels in the 5-GHz band possible again in repeater mode

  • Resolved Display of interference sources on "Wireless / Radio Channel" page in the "Use of the Wireless LAN Channels" list

  • Resolved The entire network environment of the base station is displayed in "Repeater" mode

Smart Home:

  • Improved Support for external temperature sensor to determine room temperature
  • Improved Push notification sent when an interrupted DECT connection is restored
  • Improved Error while saving Smart Home device names


  • Change The "Login without password (not recommended)" option in the FRITZ!Box user interface now requires pressing a button on the FRITZ!Box


  • Improved Function diagnostics shows insufficient memory for saving faxes and voice messages when USB storage is full
  • Change Display of port for "Diagnostics & Maintenance"


  • New Additional confirmation for certain changes can now be performed using the Google Authenticator
  • Improved Redesigned "Auto Update" page
  • Improved Event protocol on the Mesh Master also contains all events on the other FRITZ! devices in the Mesh WiFi
  • Improved Push service sends mail after the update with additional information on the version and update progress
  • Improved "Change Notice" push service now also includes information on the registration of a new DECT device
  • Improved "Change Notice" push service on new devices in the home network now also includes information on new Mesh Repeaters
  • Improved "New FRITZ!OS" push service now also includes planned time for auto updates
  • Improved Optimized time synchronization (NTP) after internet dial-in
  • Improved Consent to "Diagnostics and Maintenance" does not include permission for software updates
  • Improved Simplified display for configuration of wireless LAN, LAN and WAN in the "Interfaces" area of the "Overview" page
  • Improved Redesigned push services overview
  • Change For security reasons, the preconfigured user "ftpuser" can no longer be granted access from the internet
  • Change For FRITZ!Box users who are granted access from the internet, the password must be different from the user name
  • Change The security of new password assignments must be rated at least "medium" or they will be rejected
  • Change Additional confirmation for creating VPN connections


  • Improved Message notifying about possible detriment to FRITZ!Box functions when contents deleted from the "FRITZ!" folder

  • Resolved System folders no longer indexed for the FRITZ! media server

New for internet access with FRITZ!OS 7.0

Parallel operation of mobile network and DSL/WAN

FRITZ!OS now also supports parallel operation of DSL and LTE on the FRITZ!Box 6890 LTE. The combination of the speeds on the DSL line and the LTE connection significantly increases both download and upload rates. For each session the FRITZ!Box decides whether to connect via LTE or DSL. Thanks to the integrated WAN port of the FRITZ!Box 6890 LTE, parallel operation of LTE and an upstream fiber optic or cable modem.

Fallback options for internet access

FRITZ!OS 7 also includes new functions for the fallback mode of the FRITZ!Box 6890 LTE. It is now possible to use the internet connection via LTE until the data capacity available each month has been exhausted. For the rest of the month the FRITZ!Box 6890 LTE then automatically uses the available DSL or WAN connection. When the next month starts, the FRITZ!Box then switches back to the mobile network. Any mobile network or landline packages can be used for the internet connection of the FRITZ!Box 6890 LTE, even from different providers, individually or in combination. Only so-called "hybrid rates", which are based on closed systems with network aggregation, cannot be used.

New features for Mesh

General information on Mesh is presented at en.avm.de/mesh-networking.

Enabling the Mesh Function

To check whether a FRITZ! product is enabled for Mesh, see the Mesh Overview of the FRITZ!Box (the Mesh Master) under "Home Network / Mesh". Here the products in the Mesh are designated with a corresponding "Mesh active" symbol.

A FRITZ!WLAN Repeater or FRITZ!Powerline adapter with FRITZ!OS 6.90 or higher installed can be enabled for Mesh in various ways:

  • If the product has the factory settings configured and is being connected with the FRITZ!Box for the first time, it will be automatically enabled for Mesh.
  • If the product is already connected, but not enabled for Mesh, it is added to the Mesh by pressing a button on the product to be integrated and a button on the FRITZ!Box. On the FRITZ!Box, use the button that initiates WPS (depending on the model, press the "Connect" or "WPS" button briefly, or the "WLAN/WPS" button for 6 seconds)

Detailed instructions, additional information and the answers to frequently asked questions about Mesh are presented at en.avm.de/mesh-faq.

Telephony Mesh and Smart Home Mesh

With FRITZ!OS 7.0, telephony and Smart Home are also compatible with the Mesh.

The connections of cordless telephones and Smart Home products are displayed in the FRITZ!Box Mesh Overview. You can use a second FRITZ!Box as Mesh Repeater, and use telephones registered with the second FRITZ!Box with the numbers assigned in the first FRITZ!Box, the "Mesh Master".

Configuring a second FRITZ!Box as a Mesh Repeater with the press of a button


  • Your existing FRITZ!Box supports Mesh (FRITZ!OS 6.90 or higher). This box is the Mesh Master.
  • The FRITZ!Box to be deployed as a Mesh Repeater has been updated to FRITZ!OS 7.0 and you have restored its factory settings. This box is to become the Mesh Repeater.

Here's how:

  • Connect the LAN 1 port of the Mesh Repeater with the Master using a LAN cable
  • Initiate the Connect function on both boxes (7590: press the "Connect" button briefly; 7490: press and hold down the "WLAN/WPS" button for 6 seconds)

After the connection procedure is concluded, the second FRITZ!Box is ready for operation as a Mesh Repeater. (It is operating in "IP client" mode and, as a Mesh Repeater, adopts the wireless LAN settings and other important settings from the FRITZ!Box).

Please note that this function can be used only if the second FRITZ!Box is permanently connected with the first box by LAN cable.

If you've received the second FRITZ!Box from your internet provider this feature may not work in some cases. Please configurate this FRITZ!Box as a mesh repeater by visit the FRITZ!Box GUI manually. Instructions for configuring a FRITZ!Box connected via wireless LAN as a Mesh Repeater are presented at en.avm.de/mesh-faq

Transmit the telephone numbers of a Mesh Master to another FRITZ!Box in the home network

Once you have added an additional FRITZ!Box to the Mesh, you can configure it so that all telephone numbers are available on each FRITZ!Box. If your FRITZ!Box is connected with a landline, you can use the telephones connected to the second FRITZ!Box to make calls over the internet as well as on the landline. If the latest FRITZ!OS 7.0 is installed on both FRITZ!Boxes, the telephone numbers are transferred automatically in the Mesh once the "Telephony in the Mesh" option is enabled.

If the new FRITZ!Box is already a component of the Mesh, or if you have already set up telephone numbers on it, these telephone numbers must be deleted and one of the two FRITZ!Boxes must be restarted.

Then the new FRITZ!Box must be enabled for "Telephony in the Mesh". To do so proceed as follows:

  • Click "Home Network" in the user interface of the Mesh Master.
  • Click "Mesh" in the "Home Network" menu.
  • Click the "Mesh Settings" tab. In the "Use Telephony in the Mesh" section, click the "Enable" link next to the respective Mesh Repeater and then confirm that the procedure may be executed on the Mesh Master as well, if asked to do so.

The telephone numbers are now distributed in the Mesh and can be assigned to your telephones and other terminal equipment for telephony (for instance, answering machines) on the FRITZ!Box.

Note: Telephony Mesh is not the same thing as DECT repeating, which requires the support of special hardware on the FRITZ!Box deployed as the Mesh Master. If you would like to use DECT repeating, you can purchase the FRITZ!DECT Repeater 100 from an electronics retailer.

Improvements and Bug Fixes in FRITZ!OS 6.87


  • Improved New mobile communications modem software with various changes

  • Resolved Crashes when removing the SIM card during LTE modem initialization

  • Resolved Less than optimal throughput rates during TCP and active CA usage (for throughput rates > 240 Mbit/s)

  • Resolved Timing parameter for modem initialization corrected (avoids theoretically possible modem crashes at modem initialization)

  • Resolved Upstream with Nokia enodeB during TCP traffic too low (noticed in the mobile network of A1/Austria)

  • Resolved Periodic Location Update is not always applied correctly (noticed in the mobile network of A1/Austria)

  • Resolved Feature LTE First for FRITZ!Box 6890 devices deactivated in the mobile network of TIM/Italy deactivated


  • Improved New DSL modem software
  • Improved Interoperability for VDSL SuperVectoring increased
  • Improved VDSL adjustments for Telecom Italia (released by Telecom Italia)
  • Improved DSL trace function added


  • NEW Provider profile added for LTE and country Poland: Cyfrowy LTE
  • Changed Provider profile adjusted for LTE and country Poland: Plus LTE


  • Resolved Initial registration of telephone number after reboot sometimes not successful


  • Improved Reworked offline help

We recommend every update for reasons of security as well. Further improvements to increase security with this version of FRITZ!OS are presented at http://en.avm.de/guide/security in the area "Updates increase security".

Improvements and Bug Fixes in FRITZ!OS 6.85


  • Improved New software for mobile communications modem with diverse changes

  • Resolved With existing connection via UMTS, incoming calls were inadvertently accepted (Multi-SIM scenario)

  • Resolved LTE connection freezes up sporadically, surfing no longer possible until restart

  • Resolved Minor errors with establishing and terminating LTE connections

  • Resolved Insufficient upstream to enodeB from Nokia

  • Resolved Network feature "Absolute Layer Priority" not taken into consideration


  • Resolved In rare constellations no surfing possible after fallback


  • Improved Offline help and online help reworked
  • Improved Better system stability

We recommend every update for reasons of security as well. Further improvements to increase security with this version of FRITZ!OS are presented at http://en.avm.de/guide/security in the area "Updates increase security".

Improvements and Bug Fixes in FRITZ!OS 6.84


  • Improved New mobile communications modem software with various changes

  • Improved Better detection of error conditions

  • Resolved No negotiation of carrier aggregation with Nokia EnodeB

  • Resolved After re-establishment modem sometimes crashed

  • Resolved Incorrect reception parameters identified for second cell in case of CA

  • Resolved LTE Overview remained in 3G mode after switch 4G->3G->4G

  • Resolved LED status "not connected" intially not signaled for LTE

  • Resolved After timeout upon network request, modem sometimes crashed

  • Resolved Eliminated error in the modem firmware that led to sporadic interruptions of the mobile communications connection


  • Improved New DSL modem software with various changes

  • Resolved Sporadic interruption of connections via PVCs with CBR configuration

  • Resolved Elimination of potential crash causes in DSL modem software

  • Resolved Deadlock during ADSL sync in certain constellations


  • Resolved Internet wizard corrected for countries without preconfigured providers
  • Resolved Sporadic dropouts during streaming eliminated (in dual-stack configurations)
  • Resolved Correction for public subnet facilities
  • Resolved Error in listing provider profiles for the Netherlands
  • Resolved Unexpected configuration result for disabling the fallback option
  • Resolved Correction of missing display of parental controls when only LTE configured

Wireless LAN

  • Improved Security of WPA2 in repeater mode (KRACK)


  • Resolved Improved stability for use of USB remote connection
  • Resolved USB 3.0 drive in error condition could block update of modem software
  • Resolved USB hard drives that start slowly were sometimes not detected upon restart of FRITZ!Box


  • Improved Better system stability

  • Resolved Incorrect scrolling in mobile display of user interface

We recommend every update for reasons of security as well. Further improvements to increase security with this version of FRITZ!OS are presented at http://en.avm.de/guide/security in the area "Updates increase security".

Initial firmware version upon product launch: 06.83

Instructions for installing an update:

Use the update function offered in the user interface to install the update. This automatically offers you the right FRITZ!OS. Click "Wizards", select "Update" and then follow the instructions on the screen.

© AVM GmbH 2004?2023. All rights reserved.

This AVM firmware package contains files that are propagated under different licenses, in particular under a license held by AVM or under an open-source license (namely the GNU General Public License, GNU Lesser General Public License or FreeBSD License). For details on the various licenses, see the "license.txt" file (https://download.avm.de/fritzbox/license.txt). The source code of the files propagated as open source files can be obtained upon a written request to fritzbox_info@avm.de.

AVM grants the non-exclusive right to use this AVM firmware package, which is supplied exclusively in object code format. Licensee shall be entitled to make a copy exclusively reserved for personal backup purposes (backup copy). AVM reserves all intellectual property rights except as expressly granted herein. Without previous approval in writing, and except for in cases permitted by law, it is particularly forbidden for this AVM firmware packet to be

  • copied, propagated, or in any other manner made publicly accessible, or
  • processed, disassembled, reverse engineered, translated, decompiled or in any other manner "opened" and subsequently copied, propagated or made publicly accessible in any other manner.

DHA 2023/09/04