I have 3 x Deco M5's connected to my Home Network.  One is hardwired to my ISP's Router/Modem the 2nd is in the hallway (about 6 Meters away) and the 3rd is in the 1st floor bedroom about 6 meters away from the hallway Deco M5. These were installed in October 2019 and have been working perfectly, since installing the latest firmware the Mesh system keeps hanging (red light flashing on Hallway and Bedroom Deco's) and the only way to bring the Mesh Network back online is to power Off/On each Deco M5.

I have setup a schedule to reboot the network every morning at 3am but this hasn't fixed the problem.  I have also deleted the network, factory reset each device and run the setup again for a new network but again this hasn't fixed the problem.

I have run out of my technical knowledge so any help in fixing this problem would be greatly appreciated.