I have a Deco X55 with Ethernet backhaul, running in router mode. A few days ago I noticed it had updated to the new 1.7.1 firmware. Since then, I’ve had many problems with the two satellite Deco units. Frequently they show a red flashing light, and users complain of slow or intermittent connection. Even while this is happening, the Deco app shows that everything is OK and all devices are online.

I have tried power-cycling the entire network and this fixes the problem for a few hours, then it comes back. The main Deco next to the modem is always green and has no problem connecting; it’s just the satellite units that have issues.

I have tried all the usual things such as changing the sockets the network cables are plugged into, and swapping the satellite units over - the red flashing light always comes back after some time. It’s almost as if the Decos are running out of memory or something. Is there a bug in this latest firmware? Is there a way to downgrade to the previous firmware?