You lucky bastard!
Mine powered up for the available update, but no InReach found by the Sync software. Screen was dark at that point.
Used the soft reset: X and down buttons for 30 seconds. Nothing.
There's another level of soft reset: Plug in the charger, X and down for 30 seconds. I own a brick.
Did get through to Garmin support easily though.
It's $150 for a replacement.
Jim