I have a 2-node Deco M5 which has mysteriously bricked. Neither node will now connect to ethernet. When plugged in, the router shows no traffic. Both nodes show the yellow light permanently, except once every 20-30 seconds or so it blinks briefly. I have tried doing a factory reset, holding the pin in for upwards of 30 seconds but nothing changes.

It worked seamlessly for upwards of 2 years, until about a week ago.

I welcome any suggestions.