One reoccuring thing I have to do for my friends is fix their NNID in emunand. I'm not sure how to avoid this, all I know is that NNID was setup in sysnand before formatting emunand. Which then I'd unlink the nands. It's just ridiculous that I have to go through THIS guide every time. I guess since it was still tied to sysnand, it didn't properly switch to emunand. Thing is, how would I even remove the NNID from sysnand without losing all my save data, etc? Am I supposed to backup the Nintendo 3DS folder, format sysnand, put back the backup files, THEN format emunand to avoid nnid issues in emunand?