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Info on FRITZ!Box 6890 LTE

The update file "FRITZ.Box_6890_LTE.162.xx.xx.image" on ftp.avm.de contains the latest FRITZ!OS (Firmware) for the FRITZ!Box 6890 LTE.

Attention: This update file is intended for use only 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 7.03

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

Release date: 29/05/2019

New Features:

  • Parallel internet access via mobile networks and DSL/WAN
  • Additional fallback options for internet access
  • Mesh WiFi
  • New features for Mesh: Second FRITZ!Box as Mesh Repeater for WiFi, Smart Home and telephony
  • Reduced waiting times for wireless LAN channel switches >48 in the 5-GHz band (Zero Wait DFS)
  • Many new features for FRITZ!Fon devices
  • Register for regular status updates for your FRITZ!Box (MyFRITZ! report)
  • New features for the FRITZ! Hotspot
  • MyFRITZ! access to FRITZ!Box via internet now without security warning in the browser
  • Increased speed when using USB storage media with NTFS data systems
  • Support for DECT ULE/HAN FUN, the manufacturer-independent standard for Smart Home devices
  • Schedule for call diversion: configure once so that you can always be reached
  • Transmit telephone numbers to additional FRITZ!Boxes

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 7.00


  • 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.

Additional improvements in FRITZ!OS 7.03


  • 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

Additional improvements in FRITZ!OS 7.01


  • 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 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:

  • Resolved Possible error message (Error code 1) when IP address entered manually in the Device Details
  • Change Connection Statistics area for the powerline network moved from the Network Device Details to the "Contents / FRITZ!Box Support" area


  • 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

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.

New 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 operates 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.

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.

Display of 802.11k and 802.11v support on wireless devices

FRITZ!OS now displays wireless devices that support the wireless standards 802.11k and 802.11v directly in the user interface. Both standards are already widespread for wireless devices and are important prerequisites for the further development of Mesh WiFi for the fastest, lowest-interference, and most convenient control of wireless devices in Mesh environments To find out whether your wireless devices offer support for the 11k and/or 11v standards, see the "Properties" under the "Wireless / Radio Network" menu, or use the "Edit" function to display the properties of each wireless device.

Additional Innovations in FRITZ!OS 7.0

New features for the FRITZ! Hotspot

The new FRITZ!OS 7.0 makes setting up and using the FRITZ! Hotspot even easier. It's now even easier for users to choose whether the wireless guest access should be provided as an open hotspot, or encrypted as a private hotspot. If an open hotspot is chosen, the guests do not need to enter a security key. Cafés, medical practices and small businesses, as well as all FRITZ!Box users, can provide their customers and visitors an easy-to-use internet access that complies with the current legal regulations. Whether it's private or public hotspot, guests cannot access the home network, but surf using a second wireless LAN provided by the FRITZ!Box.

Secure and Complete Control

The operator of the hotspot can decide which applications can be used in the guest network and which are prohibited. Daily email messages notify the operator of the hotspot about which devices were registered in the radio network and when. Another advantage is the option to reserve bandwidth. This options allows you to specify how much of the data rate is reserved for your own wireless LAN and how much is available to your guests.

Individual & Convenient

The Welcome page of the FRITZ! Hotspot offers additional convenience. Cafés or businesses can greet their guests with a short welcome text, photo or logo. If desired, the guests can also be requested to consent to the terms of use for the hotspot. The hotspot is also available in locations where FRITZ!WLAN Repeaters or powerline devices supporting WiFi provide for better coverage.

Increased speed when using USB storage media with NTFS data systems

If you're using USB sticks or flash drives formatted with the data system NTFS on your FRITZ!Box, you can benefit from increased speed during transmission. You don't have to do anything ? just continue to use the existing USB storage media as before. To check what data system is used, go to "Home Network / USB Devices" in the FRITZ!Box user interface.

New security feature in the wireless LAN: "Protected Management Frames (PMF)"

FRITZ!OS now supports additional security during registration of devices with the wireless LAN. "Protected Management Frames" ("PMF" for short) offer additional protection for the wireless connection during the setup phase. PMF is standardized according to IEEE 802.11w-2009 and is automatically offered to or negotiated with wireless devices that support this technology. The new feature is available in the user interface under "Wireless / Security / Additional Security Settings".

Support for Telekom SIP Trunking

With FRITZ!OS 7.0 AVM provides support for the SIP trunking technology from Deutsche Telekom. For a few months now, Deutsche Telekom has been offering its business clients a SIP Trunk standard, making it easy to switch from ISDN to IP-based ports. The FRITZ!Box supports up to 20 direct inward dialing (DID) numbers for telephones connected directly to the FRITZ!Box. If a user's phone rate contains more than 20 direct inward dialing numbers, these can be used with an ISDN PBX (Private Branch Exchange) for the system connection via the FRITZ!Box's internal S0 interface. With FRITZ!OS 7.0, the FRITZ!Box supports the "Deutschland LAN SIP Trunk" and "Deutschland LAN SIP Trunk Pooling" rates.

Detailed configuration instructions are presented in the following guide:


MyFRITZ! access to your FRITZ!Box via internet now comes without a security warning in the browser

When you access the user interface of your FRITZ!Box from the internet, a security warning may be displayed in the browser. The new FRITZ!OS version enables your FRITZ!Box to receive a SSL certificate for your MyFRITZ! address from the organization letsencrypt.org. Browser access via the MyFRITZ! address to the interface of FRITZ!Box is no longer accompanied by a security warning, since most browsers trust the certificates from letsencrypt.org.

Proceed as follows:

  1. First you need to register your FRITZ!Box with MyFRITZ! (myfritz.net).
  2. At "Internet / MyFRITZ! Account", enable the "Let's encrypt" option.
  3. Confirm by clicking "Apply" and wait for the status "Certificate issued successfully".

Your FRITZ!Box has the certificate created for your MyFRITZ! address and uses it for browser access to this address, for example when you access your FRITZ!Box via your account on https://myfritz.net.

It's also possible to send links for FRITZ!NAS file sharing (for example photos) to third parties, who'll have access without annoying certificate warnings. This way, FRITZ!NAS becomes an even better alternative to cloud storage services.

Notes: To receive the certificate, the TCP port 443 of your FRITZ!Box is open for a few minutes. The certificate is currently valid for 60 days and is then renewed by the FRITZ!Box. HTTPS access to your FRITZ!Box via public or local IP address, "fritz.box" in the home network or over a DynDNS provider do not use the certificate from letsencrypt. MyFRITZ!App: After activation of the Let's Encrypt certificate in the FRITZ!Box, the MyFRITZ!App notifies you once about the changed certificate fingerprint. Select "trust" to continue using the new certificate.

Option for assessing and, if necessary, remedying detected interference with VDSL from Powerline

In the "Internet / DSL Information / Interference Resistance" menu of the FRITZ!Box, any interference with VDSL that may have been caused by FRITZ!Powerline can be minimized. This process of checking and adjusting can take up to ten minutes. During this time, the load on the powerline connection may affect the network quality and internet connection. This procedure can be repeated to optimize the interaction of VDSL with a high-performance powerline installation step by step, and the adjusted settings can be returned to their original configuration. This option is available only if VDSL interference was detected that could have been caused by a FRITZ!Powerline product.

Support for DECT ULE/HAN FUN

DECT ULE/HAN FUN are manufacturer-independent standards for Smart Home devices.

The following sensors passed testing with FRITZ!OS 7.0 to confirm that they work with HAN-FUN:

Used in combination with a FRITZ!Box and the FRITZ!DECT 200/210 smart plug, they can be used to realize the following scenarios:

  • Press wall switch => Outlet is switched => Light on/off
  • Motion sensor triggered => Light on in the home/garage/yard
  • Window sensor open/closed switches FRITZ!DECT 200 => connected humidifier/air purifier switches off/on Please note during installation: The Telekom app cannot be used to install Smart Home devices to be deployed with a FRITZ!Box. The HAN FUN devices are connected (paired) with the FRITZ!Box via the "DECT" button. In addition to the AVM Smart Home devices, a maximum of ten HAN FUN devices can be registered with a FRITZ!Box. After successful DECT pairing, the new devices are listed in the FRITZ!Box user interface ("Home Network / Smart Home") as "HAN-FUN function xxx" and their properties can be configured accordingly.

Disclaimer: Due to the general conditions prevalent in radio technologies, as well as certain special product properties of products, AVM cannot guarantee the complete functionality of devices from other manufacturers.

Support for Speedphone 11 from Deutsche Telekom

With FRITZ!OS 7.0 it is possible to use a Speedphone 11 with advanced telephone functions with a FRITZ!Box. For this the software of the Speedphone 11 must be updated.

Please note: At the time of publication in July 2018, a corresponding update was forthcoming.

If the firmware version 4.01 is installed on your Speedphone 11, perform the following steps:

  1. Register the Speedphone 11 with the FRITZ!Box according to these instructions, during which the expanded security functions of the FRITZ!Box will be disabled briefly: https://avm.de/service/fritzbox/fritzbox-7590/wissensdatenbank/publication/show/3288_Speedphone-nach-Neustart-der-FRITZ-Box-abgemeldet/
  2. If a new Speedphone firmware is available for updating, it will be offered automatically. Alterntively, you can perform a manual check via the menu.
  3. Once the firmware has been updated (> version 4.01), the security functions disabled in step one should be reactivated in the FRITZ!Box.
  4. Re-register the Speedphone 11 with the FRITZ!Box.

The Speedphone 11 is now available for telephone services with DECT encryption enabled. The following features were tested successfully:

  • caller ID display
  • caller ID
  • access to the FRITZ!Box address book
  • call list
  • use of the FRITZ!Box answering machine

Disclaimer: Due to the general conditions prevalent in radio technologies, as well as certain special product properties of products, AVM cannot guarantee the complete functionality of devices from other manufacturers.

Improvements and Bug Fixes in FRITZ!OS 6.87


  • Improved: New mobile communications modem software with various changes
  • Fixed: Crashes when removing the SIM card during LTE modem initialization
  • Fixed: Less than optimal throughput rates during TCP and active CA usage (for throughput rates > 240 Mbit/s)
  • Fixed: Timing parameter for modem initialization corrected (avoids theoretically possible modem crashes at modem initialization)
  • Fixed: Upstream with Nokia enodeB during TCP traffic too low (noticed in the mobile network of A1/Austria)
  • Fixed: Periodic Location Update is not always applied correctly (noticed in the mobile network of A1/Austria)
  • Fixed: 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


  • Fixed: 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
  • 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: Better detection of error conditions


  • 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


  • Resolved: Incorrect scrolling in mobile display of user interface
  • 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".

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?2019. 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.

TVI 2019/05/29