So i recently bought this psp 2001, the version is 5.00m33-3 and the color is metallic blue. I can run certain games like monster hunter freedom unite and naruto ultimate ninja heroes 3, however , when i tried to run little big planet/god of war[ghost of sparta]/kingdomheartsBBS it will show the PSP screen, then goes to loading [ pitch black ] and then hangs! Why is this happening and how can i solve it?

Well you are running a custom firmware and its probably having update issues if the custom side of the psp is outweighing the potential to run umd discs efficiently then just update the m33 out of the unit or download a firmware emulator for it i had to on my virgin firmware unit but even these get put out and never updated to run newer firmwares so its a shot in the dark for you but try it so google psp hacks and homebrews and there islots of sites with goodies you can use that custom firmware for even used for loading your iso games rite off the memory card instead of discs ok look around and you will be surprised what a custom psp can do:)