Um I have my own bios from my gba that i dumped. um fire works fine with me. Mybe you have that weird bios thats been going around that alot of people seem to have. It works fine on 90% of games but those 10% seem to give it fits. I forgot how you check but its somethign with the number code in the bios. oh if yall need any help on any other gba game let me know. Been getting a good bit of them to work (camelot mario tennis, golf(still wit graphics glitch but full speed)