Well I have Acekard 2 not 2.1 and seems to be a little busted up. The thing is it was with the bliss final firmware a while ago since it was not mine. First of all it gave me the FAT ERROR after that i formated and tried once again with AKIO 1.2 firmware and it did not load at all it stayed in a black screen after the DS loading screen. I tried with another SD card a sandisk 1GB and with original firmware 4.11 and the microsd icon keeps flashing. I tried with the one it had a A-Data 4 GB class 6 and with the only firmware it seems to work is with the original ak2 firmware I currently have the 4.11 firmware it does load but when displaying the menu the SD card icon on top right keeps flashing and nothing seems to appear. Does anyone have any suggestion on what should I do. Thanks in Advanced.