Trying to update my new 12Fg and I have 2 different SD 1GB cars. One is a Kodak high speed (brand new) and the other is a generic that had photos on it but they are all erased. I'm trying to format one of them so that I can update the radio. I put the card in the back of the radio and power it on and nothing comes up about formating. I go to the system menu and click on information and it says there is no memory card. Is it a problem with the SD cards I have?? How do I know what card will work in the radio?

Thanks