If you have a backup there's no way you're gonna wreck your switchPutting it on the sysnand can be pretty tricky as you need to dump the sysnand, put the savefiles on the dump with a PC and then flash it back. One wrong move and you wreck your Switch.
As far as I know, Nintendo doesn't check save files unless the game has an online feature.
Can you two give me an exact guide on how to do it, please?
Thanks in advance
I have a CFW installed. Though I want my edited (not modded or anything, just edited rupees and materials and stuff) on my normal firmware so I can play it there.There is always a chance that they might ban you, you need CFW to decrypt and inject your save.