No 4k on Mac OS 11.3 (M1)

[Tazovsky]

Originally Posted by rottyman

I read that if you use Time machine to restore, it does not restore OS updates. I'm relatively new to Mac so not sure how true that is. I did a restore from yesterday (before I updated to 11.3) and I am still running 11.3. It did not roll back my OS update.

You need to reinstall macOS with lower version and then restore from Time Machine.