If you don't know, an update for the 7490 came out last Friday. It has a lot of fixes and a few new features.  

Here is the info on it.

https://en.avm.de/nc/service/downloads/?product=fritzbox-7490 

I have been using it since then and have had no problems.  Mesh is a lot better.

Disclaimer: Update is your decision.

Smithy