I accidently updated to 1.0.1. Is there a way I can bring it back to 1.0.0?

Depends on how much corruption u want

Um no the only way ik is to buy a cartige 1.0.0 i think thats it

I guess u could do a factory reset on your switch but you will lose your save data for all your games

im gonna say no unless you do a factory reset then dont reconnect wifi

Or buy a new switch and use that.

@BigMJ there's one little problem with that. I'm broke

UPDATE: I got 1.0.0 back with this video. It works for digital too, you just have to go to the Eshop and redownload it without having to pay for it again.