Dammat!
There were repeated power outages here the other night. The synth was NOT on, but it was plugged in (thru an old surge protector).
Now it won't boot.
I did the basic "won't boot" troubleshooting procedure, but no luck.

Sent a message to Support. So sad!
Fortunately, I backed everything up a month or so ago, so I only lost my few recent tweaks, but, what a bummer!
(Back up your patches! And maybe get new surge protector?)