Constant errors

[bobonoegh]

Every time I try to downgrade beat saber, I get an "unknown error". No clue how to fix this.

[ComputerElite]

Could you press upload logs and tell me the id it gives you

[ComputerElite]

The issue is most likely that you logged in with an account that doesn't own the game. I just published an update which should show you an error which makes more sense and prompt you with further steps.