The «Best Way» is restore the original NAND backup created BEFORE YOU TOUCH ANYTHING on your console, or make a clean one using the guide https://gbatemp.net/threads/guide-nand-rebuilding-for-no-backup-broken-emmc.593995/I would like to return my switch to its stock, non hacked, no payload required to boot status, with no hack left behind.. what is the best method to do this clean out?
Why do you want to clean it then if you're not going to play online?that isnt a concern to me.. i just wanna clean it back to stock.. online play is moot