I have a Supercard DSTwo and it had been working just fine for years. Recently, my microsd became corrupt - the DSTwo could still run it, but my computer couldn't read it (it broke halfway through a .sav backup, luckily I managed later to copy all my saves). So I got a new microsd - a Nokia class 6 8GB one. I copied the needed files that any guide/site has, and put it in my DSi XL to try and boot it. The DSi recognized the cartridge - it showed the icon and all - but when I tried to load it, it first just gave me a double black screen. Later it said there had been an error and to consult the DS manual. I looked it up, and I saw that it could be my DSi blocking it, so now I got my brother to lent me his DS Lite to use it to update it. It still won't work. I get a white screen at the bottom and a black one on top. I tried formatting the microsd, I tried downloading different releases of the firmware, nothing is working. I've been searching online too and can't find anything that works. What could be wrong?