My Roon died after the last update

[Suedkiez (Just a fellow user like you)]

You were running earlyaccess on the PC and production on the ROCK. That’s not a supported configuration and can break. In fact, it says so right there in the release notes for the earlyaccess build 1292 that you had on the PC:

@vova

Please note: this update will prevent users from connecting an earlyaccess Remote to a production Core. Attempting to connect in this setup will prompt an incompatibility screen. If you have migrated your core away from earlyaccess then you should install the production remotes to match.

When switching between earlyaccess and production on the PC, you simply reinstall the version from the respective links, which is probably what you have done anyway. On the ROCK, switching the update channel requires to download the respective configuration file and reboot. In any case, make sure that you are running consistent versions on ROCK, PC, and mobiles - either earlyaccess or production.

The whole thing is described here:

Roon Early Access Program