Ok I have a couple of these cards R4i SDHC 3DS V5.0 they are running latest V180B download and work fine on my 3DS XL no issues whatsoever? My problem is that 99% of the same games when I put the cartridges in my DSI XL (running 4.1.5) with different memory cards/ formatted all the usual stuff etc etc makes no difference I am getting white or black screen and that it? put it back in 3DS and all good? The only game that seems to run on DSI is Mario World? I am guessing / hoping It just something silly I have overlooked because It strange how all the roms work fine on 3DS and only 1 in 10 is running on DSI???? CHEERS IN ADVANCE!