@Alexandre. Thank you for the hint. I will ask for firmware. That's weird, but all troubles with Decos disappeared after I made this post on support forum :)

@Alexandre. Thank you a lot for detailed explanation. Now I will wait for next failure of Decos and then I will check ISP router for uptime and Decos for logs.

@Alexandre. absolutely no any power outages in years

Hello, Recently I bought 3 Deco M4 and configured them to work in Access Point mode in my home. The home is connected to the internet via Telia provider using Inteno DG200 router. The connection is...