It used to work before, but it suddenly "died". It still gets recognized as "M3/G6" on GBA Exploader + SuperCard, and as "DS Option Pack" on the DS Menu. I tried letting my DS battery die running games and recharging it with the M3 GBA plugged in, but it didn't work. Is there anything I can do? Also, can anyone tell me can kind of battery's on the M3 GBA Expansion to see if I can replace it, would it even work?