My brother bought an M3 perfect slot 2 device and passcard 2 months ago. A few days ago, it stopped working. When trying to use the NDS features with both inserted, after showing the passcard message, it shows a black screen and freezes there. When using gba without the passcard insertted, Before, when we had an update file on the 2gb mini sd, it showed that before freezing. Now, when we took out the update file (after updating of course) it just shows a black screen. Should we return it? I have lost confidence with M3 since I used a supercard for the last 6 months now wiithout any trouble. Should we exchange it? Can I fix it on my own (preferred option)? Thanks for your help.