Thank you for this. I was able to backup my saves on 3.0.1, format my nand, format my sd to exfat, update to 6.1.0 and then restore my games for Zelda BoTW, Skyrim, Mario Kart 8, Mario Odessy (all of which had 100s of hours) and they all work. Awesome work man! A real shame nintendo makes us pay...