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...
> https://en.fritz.com/fritz-lab/fresh-from-development/known-issues/
Discover FRITZ! Find out about the versatile and user-friendly solutions for your Internet connection and home networking.
> https://en.fritz.com/
Welcome to the FRITZ! Lab. Here you can test drive brand new updates for FRITZ! products, direct from AVM's development team. Have you ever wondered about updates not included in regular releases? FRITZ! Lab is the place for you. Download the updates and try out the latest features. We're looking forward to your feedback!
> https://en.fritz.com/fritz-lab/
Fresh from development This FRITZ! Lab contains new functions fresh from the AVM development team and gives a preview of upcoming FRITZ!OS features in the next major update. It also contains the latest developments in the areas of security and energy efficiency. The FRITZ! Lab launched adds additional control functions to the home network, increases fallback protection for the internet connection,...
> https://en.fritz.com/fritz-lab/fresh-from-development/fresh-from-development/