I've purchased a R4 Gold RTS card from nds-card to put CFW on a couple of 3DS XLs. The first one went fine (CFW and Homebrew installed), but when I tried inserting into the second 3DS, the R4 card no longer appears on the home screen. I've just noticed the text "Please note that the card can not play nds games any more after it is flashed ntrboothax." Does that mean the card can only be used once for installing ntrboothax and it must be thrown away? If so, is there any way of reseting it?