I've just got the supercard SD for a friend (They wanted the cheapest). I've had supercards in the past and have had no problems with them. I do have stealth flashme installed on both my phat and ds lite. I put the cartridge in with the SD card inserted and it just boots up normally to the health screen. When I remove the SD card the supercard boots up but says something like write protected please turn of GBA. I have had the card working once and managed to upgrade the firmware. I removed the card to remove the firmware update from the SC. Now the supercard isn't detected at all with or without the SD card inside. Does anyone know what the problem is? If I have to send the card back to bamboogaming as faulty it will be weeks before I get a replacement.