Having problems with my 256m flash2advance card. When i turn my gba sp on i get the gameboy splash screen but the bit that says nintendo is all corrupted, and it just hangs there. F2A USB writer 11 says unknown cart when i connect to it. F"A power writer connects to the card and can read write and flash stuff to it, but it keeps saying it is 512m not 256.. but it still wont boot games i just hang on the gba screen. Can you reflash new software to the cart like you can with supercards on nintendo ds?? Any ideas anyone??