Most of my 3DS systems (all working ones in fact) have the same NNID. However, with how this works, I can only log in and use the E-shop on one of them. I want to know of a way to create a new NNID on the ones that don't connect, without formatting my EmuNAND. I'm guessing there's a way with decrypting the emuNAND, and modifying or deleting a file. I don't need my purchases to link, I just want to use badge center and demos on any of them