Forgive this being in English, I am visiting and am helping with an internet issue. Feel free to answer in German.

The router has only been installed about 6 months after a network upgrade (VDSL from ADSL I assume).

I've noticed the internet go down once ot twice a day and only a router reboot will bring it back. The firmware is 050136.3.5.002.0 which it tells me is the most recent.

This feels to me like a firmware issue as the software should be able to recover from the internet dropping.

Any ideas?