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FRITZ!Box 6850 5G starts with lab version, 6850 LTE with update



FRITZ!Box 6850 5G starts with lab version, 6850 LTE with update

With the FRITZ!Box 6850 5G, AVM has added a new router to the lab series. Owners of this model can currently test FRITZ!OS 7.39 in beta version, which will soon be replaced by FRITZ!OS 7.50 final version. Owners of a 6850 LTE have been able to test the beta for a long time, but will also receive a new beta version at the beginning of the week. The changelog has a lot to offer, including improvements for WireGuard VPN connections:

change log

Further improvements in FRITZ!OS 7.39-99732

The Internet:

  • improvement Improved performance of WireGuard VPN connections with software and hardware acceleration
  • improvement Improved guidance and error messages regarding port versions on PCP connections
  • modification Conversion of the connection data display table into a generally valid format
  • modification The IPv6 tab is displayed on IPv6 connections only
  • modification Provider Services tab is displayed when TR-069 or USP (TR-369) is enabled
  • Fixed In some scenarios, the NTP server of the FRITZ!Box was not functional after the Internet connection was restored
  • Fixed Under certain circumstances, not all DNS servers provided by the provider were used

home network:

  • improvement Extended display in mesh preview to include connected network switches or serial access points


  • modification Renewed content under “Help and info > More functions” briefly explained
  • modification Added search by keyword in the menu under “Help and Info”: display of the result in the help

Further improvements in FRITZ!OS 7.39-99732 (within FRITZ! Labor)

The Internet:

  • Fixed Unnecessary IPv6 routes were created on mesh repeaters
  • Fixed Company connection via WireGuard VPN was not possible in some scenarios


  • Fixed A phone number could not be added from the call list to the phone book and call blocks
  • Fixed Cellular calls with a hidden number are not signaled
  • Fixed With cell phone calls via keypad sequence, the last digit was not transmitted


  • Fixed Manual channel selection also possible for channels that do not have the maximum channel width


  • improvement Handling the display of connections when using certain network switches

home network:

  • Fixed Various errors in the initial setup wizard


  • Fixed Some radio stations cannot be added


  • improvement stability
  • Fixed A blank page was displayed when changing the auto-update level

How to install a lab version on the FritzBox

  1. Read and confirm the information displayed on the AVM Lab page of your FRITZ!Box.
  2. Click “Download” and save the file to your computer.
  3. Unzip the lab file (*.zip).
  4. Perform the update via the FRITZ!Box user interface and select “View: Advanced” in the footer.
  5. Select “System/Update” from the menu.
  6. Select the “FRITZ!OS File” tab. Save your FRITZ!Box settings. The execution must also be confirmed.
  7. Use “Select File” to select the firmware file you downloaded earlier.
  8. Click “Start Update”.
  9. Follow the instructions on the screen.

The “Info” LED on the FRITZ!Box flashes during the update process. This expires when the update process is complete. Be patient, this process may take a few minutes. As soon as the update is complete, the FRITZ!Box is restarted and is operational again.

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