Thought I would chime in as I just completed the upgrade. Instructions worked fine for me on a Pi-4 “The Bitcoin Machine” device. I flashed the card (copied it first) then rebooted and was greeted with a new user sequence - had to create a new user name and password which was confusing. Umbrel loaded and - no apps. Nothing. I did see a notice for an update to Umbrel OS 1.0.0 which I thought I had just completed. Clicked install, the update progress report ran and after about 5 min I was back at the login screen. Logged in with my original password and boom I was in and all my apps were there - though they were all in a not running state. Waited until they reported as started and have been opening each. So far so good - BTC node and LN node both seem fine. Will report back with any app issues.
My TBM LCD was wiped out as it lived on the SSD with Umbrel. I followed the steps from here - Bitcoin Machine LCD (v 0.5) - Run your Bitcoin and Lightning Node to reinstall (which I have done before) . I did get one weird error with Python and a managed environment but it seemed to complete as expected. Will update after checking all the apps and rebooting.
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