me-9.4

Hi there, I have a PSP 2003 (the Simpsons model) that I recently hacked. It plays ISOs perfectly, but when I try to play my UMD of Dissidia: Duodecim, the screen goes black, and eventually, the power of my PSP turns off. Is this a hardware issue, or do I need to readjust the settings on 6.39...