Thanks for your reply, @David-TP! It looks like the troubleshooting piece that I neglected is re-installing the firmware. After days of being unplugged, I was able to reconnect the device and it...

I've had a set of 3 Deco P9s for about 18 months, and over the last several weeks a single unit has begun experiencing requent disconnects (several times per day, only fixed with a power cycle of...