I want to roll back to my previous version

I'm not impressed again. Another update problem. I was doing an update from 2022 SP2 I think and thought I was moving to 2022 SP4. Got 2023 SP0. It isn't working right, changed my cursor, changed all my dimension settings, who knows what else. Then I land here to try to get some answers. Look at the mess of complaints about 23 SP0. Do you not make sure the update is stable before you release it? Trim doesn't work any more? 

I want to roll back to my previous version. How do I do that?

I'm on a time sensitive project and don't have time to play around. I had to do this last time I updated a year ago and that took at least a week.

If I can't do that easy what do I have to do to go back to a restore point. Do I have to uninstall my licence first? Return to the restore point then reinstall thew licence?

Bruce