So on my Micro SD card I have M3 Sakura Firmware. When I turn on my DS, with the flashcard in of course, it loads up to the part with the M3 Sakura logo in the right bottom corner of the screen with a black background. Then all of a sudden, it freezes at this point. At first, I thought that my M3 was just dusty at the back so I removed it from the slot and blew it. I placed it back in and tried again, but to no avail. I tried this once or twice more just to be sure but it would most definitely still not work. Then my second problem came when I tried to check my Micro SD on my computer. My computer did not recognise my card when I put it in. By this I mean that nothing came up. I pulled it out and plugged it back in several times and checking different USB ports as well, but it wouldn't work. Could someone help me, please? I'm just not sure what to do now. The last thing I remember being able to do with my Micro SD plugged to my computer was putting a patched version of a game on and so I think that the game that I put on is the problem.