This is because of Anti-Piracy you can attempt using multpiple firmwares for your clone but your bestbet is to buy a new flashcard If you want premium get the Super card DStwo, it never has the problems you seem to be having and also has a gba emulator as well as a snes and a movie viewer. If you want cheap but reliable get the Aceakrd 2i or the Ez Flash, make sure you check Shoptemp to get the best prices