I followed their recent Linux instructions, and after my reboot I'm just looking at a cursor. Nothing else. No hard drive activity light. No network activity. No nothing. Just a blinking cursor.
Discussion
whoah: Does this help at all? https://community.umbrel.com/t/how-to-update-to-umbrelos-1-0/15575/47?page=3
May I ask, did you follow these instructions?