SO. 1. i have a ds lite. 2. i have a macbook 2b.if it matters i have snow leopard. 3. if there is windows sofware that can solve my problem, i dont care, because i have crossover for mac. I backed up my acekard2i and re formatted my 2gb micro sd card (on my macbook) to fat32. I re copied everything back to my microsd card, but when i turn on my ds and select acekard 2i it shows the loading screen for about 1/4 second then says "System File is Missing" and it hangs there. i have read posts about this same thing, but the problem is always that they havent put the firmware on to the microsd card. i tried akaio 1.5 and the official aceard 4.1 firmware, neither work. if anybody can help i would appreciate it!