I searched for a similar thread but I could not find one explaining the problem I'm having.

I'm trying to play ISOs from my psp memory stick.
I have CFW 5.00 M-33 6
I downloaded UMD Emulator, put the two folders in the game folder of my memory stick, and put an ISO folder on the root of my memory stick and put my ISO in that folder.
I looked for UMD Emulator on my psp, but it says it is corrupted.
Am I doing something wrong? Is their an easier way to do this?