Well i just downgraded two 3ds whit the dsiware method, but now in my 3ds i can't use my NNID it says that is already in another console, i have to mention that i formated my console before the transfer to make the transference whit my consolve empty (i have a backup before the format), i incjected my nand backup whit my NNID but it fails to conect, the i formated again i put my NNID to vinculate again before inject my nand again but it bring's me that error that the NNID is in another console when is not, the error is 022-2591, please can someone help me ?