Trying to upgrade to OH4 from 3.4 but failing. I’m running Openhabian and it fails via System Upgrade as well as via Install as via trying to install Java 17 via menu option 4* (whatever number that is). Attempts via APT fails as well and attempts to manually install Java 17 w APT fails pointing at…

Having tried to get around this and failed in spectacular fashion, I surrendered and made a fresh install with Openhabian and then restored settings to it. Worked flawlessly and I am now running 4.0. Will mark as closed!

openHAB Community

Openhabian: Update to OH4 FAILED (fetching Java17)

Setup, Configuration and Use Installation

mstormi (Markus Storm) August 6, 2023, 1:25pm 17

See also openHAB 4 migration FAQ question #1.