So recently I tried popping in my R4i Gold 3DS flashcard into my 3DS as usual after the latest update, but for some reason, the card was not being read at all. At first I thought perhaps I had misread something and the card had been blocked, so I tried popping it in my old DSlite only to discover that device couldn't read it EITHER. What can I do to fix this problem? I have one of the good batches of Rev. C cards that has no problems updating.