Hello, I can't find any reference for the LED flashing that's occurring. I just attempted to flash a 10.2 RR-MAIN-REP with 11.0, from what had been 10.2. It got about 80% and then failed, suggesting I try power cycling and beginning again. I did that, device never came back up. Now I have a repeater which flashes it's RF, Wired, Test and Add LED's green all at the same time, about once every three seconds. The ethernet port behaves the same way; the link and tx/rx lights come on, it establishes communication with the switch for a second or so, then it goes back down.
Sounds like it's stuck in a boot loop since the ethernet has been impacted as well.
Since it never comes up and never stops what it's doing (waited up to 30 minutes), has it been bricked?
I tried factory resetting it, by triple tapping Test with a hold on the third press, and it never stops this same flash pattern, so it appears factory reset is not possible either.