Known issues

Issue:

The FRITZ!OS update fails with the message "An unspecified error occurred during the update. (5)".

Remedy:

The specified file is no update file. It could be the fritzbox-*-lab*.zip file, which contains the lab update file.
Unzip the downloaded ZIP archive before starting the update and select the lab update file from the unzipped files (FRITZ!Box-Lab-xxxx.image).
Detailed instructions for the lab update are presented under "Installation on the FRITZ!Box" on the page from which you downloaded the lab package.

Issue:

Exiting the lab and returning to the official FRITZ!OS

Remedy:

Via the FRITZ!Box user interface, the lab can be left at any time in order to return to the official release. For this an additional option is offered for lab versions in the System menu under "Update" on the "FRITZ!OS File" tab: "Back to official FRITZ!OS". This takes you back to the official FRITZ!OS. With this feature you can always also securely restore your original settings with the backup file you created before installing the lab version.

Issue:

The Energy Monitor is currently being revised and improved.
(only FRITZ!Box 6690 Cable)

Remedy:

For this purpose, it has been temporarily removed for the upcoming update for FRITZ!Box 6660 and 6690 Cable and will return in a revised version in a future FRITZ!OS.