I have bought a iPronto TSI6400 and would like to use a MMC card in the slot on top of the remote. I have tried some 5 different MMC cards, but therte is no card that will work. I know for sure that the iPronto works fine also with a card (My brother has the same remote, but got a MMC card with the purchase. Who can explaine to me how and where I can determine that I have the right card for my iPronto?