how the hell do i play the uncensored version of manhunt 2 on psp?

[94 SVT Cobra]

read around that you can, but i do NOT understand how to hack a PSP as you seem to need 20940824 programs to have a slight idea of what your doing it seems....so long story short, who can help me just break it all down very simply.

i need to know how to play a PSP game using just the ISO of the game, not the actual game. onlyh way to play manhunt 2 uneditied is using the ISO and modifying it. i have the modified iso, just no idea how to use it.
thanks, rep will be given