Telekom Glasfaser-Modem 2 (aka Sercomm FG1000B.11) firmware update available #428
Description
Looks like now Telekom is making firmware update files for their Glasfaser-Modem 2 (which is a Sercomm FG1000B.11) available through their website:
https://www.telekom.de/hilfe/geraete/router/zubehoer/glasfaser-modem
At the time of writing (2026-01-15) the update files for FW version 090165.1.0.009 for both HW revisions (2 and 2b) are identical.
The file seems to be encrypted / obfuscated (at least binwalk can't find any linuxy things). Is this a known Sercomm update format and are there tools out there already to get to the contents?