Well, I lost my 2GB SD card so I decided I would use my 4GB SD Card. However when I start up the M3 it says the M3 logo in the corner, then the logo disappears and it hangs on a black screen! If I hold down A it hangs on a black screen with SLOT 1 written across it. I'm using the latest M3 Sakura / M3 Real dual boot (off official software). Any ideas?