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Fresh from Development

This FRITZ! Lab contains new functions from our development department and offers a sneak preview of the upcoming FRITZ!OS 8.50: It serves as the basis for new functions in the MyFRITZ! App and prepares the FRITZ!Box for this app. The security architecture of FRITZ! products has also been further optimized. Switching to a new FRITZ!Box is easier, and there are new features for telephony.

In coming months the FRITZ! Lab will add additional features and improvements in many areas and be made available for additional FRITZ!Box models.

New features at a glance

  • Overload switching for the FRITZ!Smart Energy 200 and 210 smart plugs
  • Smart home routines now support multiple triggers
  • New ‘Simple Mode’ for the FRITZ!Fon brings simplified operation and an SOS call
  • DNS queries from the home and guest networks can be filtered using specified filter lists [more]
  • New prioritization feature automatically ensures the best possible connection [more]
  • Smart Check shows the current status of the FRITZ!Box in the MyFRITZ!App and outputs notifications and recommendations [more]

The ‘New / Improvements’ section has a complete list of all updates, improvements, and changes in this Lab.

Installation on the FRITZ!Box

You're not using the current FRITZ!OS in your FRITZ!Box yet? Then first update FRITZ!OS to the latest release version. Here we tell you how this works.

Once your FRITZ!Box has the latest FRITZ!OS installed you can start installation of the lab version.

  1. Read and confirm the information displayed.
  2. Click on ‘Download’ and save the file on your computer.
  3. Unpack the lab file (*.zip)
  4. Use the FRITZ!Box user interface to install the update:
  5. Select the ‘System / Update’ menu.
  6. Select the ‘FRITZ!OS file’ tab. Back up the settings of your FRITZ!Box.
  7. Select the lab version that matches your FRITZ!Box model (e.g. C:\Documents and Settings\Username\Desktop\FRITZ!Box-xxxxxx-Lab.image).
  8. Click on ‘Start Update’.
  9. Follow the instructions displayed on the screen.

During the update process the ‘Info’ LED on your FRITZ!Box will flash. The LED goes out once the update is complete. Please be patient, as this process may take several minutes. As soon as the update has been completed, the FRITZ!Box restarts and is then ready for operation.

Important

This FRITZ! Lab version is a beta. Please note the terms of use and the data protection statement for our products.

You can switch back to the official FRITZ!OS at any time under ‘System > Update > FRITZ!OS Version’.

Please also note the information about the use of lab versions in the infolab.txt. It is contained in the lab file (*.zip).

Here you'll find the download package for starting in the FRITZ! Lab. After the installation you'll receive updates via the automatic update function.

FRITZ!Box Fiber

FRITZ!Box - freigestellt mit transparentem Hintergrund

FRITZ!Box 5690 Pro

8.40-136549
2026-09-17

FRITZ!Box 5690 XGS

8.40-136552
2026-09-17

FRITZ!Box 5690

8.40-136546
2026-09-18

FRITZ!Box - freigestellt mit transparentem Hintergrund

FRITZ!Box 5590 Fiber

8.40-136539
2026-09-17

With the download and use of the FRITZ! Lab you consent to the Terms of Use for the FRITZ! Lab.

Information: Here is the Data Protection Statement for FRITZ! Products and the use of the FRITZ! Lab.

FRITZ!Box DSL

FRITZ!Box - freigestellt mit transparentem Hintergrund

FRITZ!Box 7690

8.40-136522
2026-09-14

FRITZ!Box - freigestellt mit transparentem Hintergrund

FRITZ!Box 7630

8.40-136168
2026-09-09

FRITZ!Box - freigestellt mit transparentem Hintergrund

FRITZ!Box 7590 AX

8.40-136400
2026-09-10

FRITZ!Box 7590

8.40-136397
2026-09-10

FRITZ!Box - freigestellt mit transparentem Hintergrund

FRITZ!Box 7530 AX

8.40-136589
2026-09-18

With the download and use of the FRITZ! Lab you consent to the Terms of Use for the FRITZ! Lab.

Information: Here is the Data Protection Statement for FRITZ! Products and the use of the FRITZ! Lab.

FRITZ!Box Cable

FRITZ!Box - freigestellt mit transparentem Hintergrund

FRITZ!Box 6690 Cable

8.40-136561
2026-09-17

FRITZ!Box - freigestellt mit transparentem Hintergrund

FRITZ!Box 6670 Cable

8.40-136558
2026-09-17

FRITZ!Box - freigestellt mit transparentem Hintergrund

FRITZ!Box 6660 Cable

8.40-136555
2026-09-17

Mit dem Download und der Verwendung des FRITZ! Labors stimmen Sie den Nutzungsbedingungen für das FRITZ! Labor zu.

Information: Hier finden Sie die Datenschutzerklärung für die FRITZ!-Produkte und die Verwendung des FRITZ! Labors.

FRITZ!Box for Modem/Network

FRITZ!Box - freigestellt mit transparentem Hintergrund

FRITZ!Box 4690

8.40-135919
2026-08-27

FRITZ!Box - freigestellt mit transparentem Hintergrund

FRITZ!Box 4050

8.40-136530
2026-09-16

With the download and use of the FRITZ! Lab you consent to the Terms of Use for the FRITZ! Lab.

Information: Here is the Data Protection Statement for FRITZ! Products and the use of the FRITZ! Lab.

FRITZ!Box 5G/LTE

FRITZ!Box - freigestellt mit transparentem Hintergrund

FRITZ!Box 6850 5G

8.40-136254
2026-09-04

FRITZ!Box - freigestellt mit transparentem Hintergrund

FRITZ!Box 6850 5G v2

8.40-136257
2026-09-04

FRITZ!Box - freigestellt mit transparentem Hintergrund

FRITZ!Box 6850 LTE

8.40-136256
2026-09-04

FRITZ!Box - freigestellt mit transparentem Hintergrund

FRITZ!Box 6850 LTE

8.40-136255
2026-09-04

With the download and use of the FRITZ! Lab you consent to the Terms of Use for the FRITZ! Lab.

Information: Here is the Data Protection Statement for FRITZ! Products and the use of the FRITZ! Lab.

FRITZ!Repeater

FRITZ!Repeater 6000

8.40-136636
2026-09-18

FRITZ!Repeater 3000 AX

8.40-136629
2026-09-18

FRITZ!Repeater 1200 AX

8.40-136616
2026-09-18

With the download and use of the FRITZ! Lab you consent to the Terms of Use for the FRITZ! Lab.

Information: Here is the Data Protection Statement for FRITZ! Products and the use of the FRITZ! Lab.

FRITZ!Mesh Set

FRITZ!Mesh Set - freigestellt mit transparentem Hintergrund

FRITZ!Mesh Set 1600

This FRITZ! Lab download is exclusively designed for FRITZ!Repeaters from a FRITZ!Mesh Set (2-pack or +3-pack).

8.40-136427
2026-09-10

With the download and use of the FRITZ! Lab you consent to the Terms of Use for the FRITZ! Lab.

Information: Here is the Data Protection Statement for FRITZ! Products and the use of the FRITZ! Lab.