Then with the progress indicator at only about 25% complete, I briefly see an “Update successful” message popup and am then returned to the dashboard/settings screen. But my node is still running v0.4.18.
Yeah, i’m having a similar issues. From what I can see in the logs this line:
Err:6 https://ookla.bintray.com/debian generic Release
Could not handshake: The TLS connection was non-properly terminated.
E: The repository 'https://ookla.bintray.com/debian generic Release' no longer has a Release file.
That seems to prevent the update from finishing
From memory I installed speedtest on my umbrel some time ago so maybe you have a package that is also doing the same.
UPDATE: Can confirm removing that package and the associated repo from the sources (although in my case it was: sudo rm /etc/apt/sources.list.d/speedtest.list) allowed the update to continue