CX with AMSv3.12 stuck in reboot loop

My CX model D1 running AMSv3.12 will not boot up all the way. I see the http:///v3_triggerupdate.php page prompting to upgrade to 3.13, but whether I choose “Update Now” or “Update Later”, nothing ever finishes.

The server itself keeps cycling through red light, green light, beep, green flashing, red light over and over.

Your server requires service, please go to the RMA portal to submit for assistance.
Please do not continue to reboot the unit.

Link to RMA instructions below

OK. I’ve just done that. I’ll cancel the 1:1 support session I had booked.