Rollback

Updates only ever move forward, so going back to an earlier version means putting a backup back.

Your system takes a snapshot just before every update, named Before update to and the version it was heading for. That is your rollback point, and it is kept rather than swept up with the nightly backups.

If the system is still running, open the Sensa Settings panel, choose the Backup tab, find that snapshot in the list and press Restore. See Backups.

If the system will no longer start, follow Recovery instead.