I'm running 5.50 Gen 3d on my psp 2001, and sometimes when playing games either from the mem stick or disc, the game crashes. When playing from disc, the game stops reading and the screen goes black, then the psp makes a pop and shuts off. When playing from mem stick it does the same thing randomly. This happens on Dissidia and on Tactics Ogre. On dissidia, it happens randomly, but in Tactics Ogre, it happens when trying to load the first battle every time. I just tried playing the 3rd Birthday, and it seems fine. All of my older games work fine, and emulators/music etc all work great. Any ideas? Thanks.