Ironman Iso Psp

Why doesn't work my psp game ISO? HELP please I'm begging?

I upgraded to 3.52 M33. Ive tried three different games: Tekken DR, NFS Most Wanted and Ironman. 2 first come upon the image of the menu screen, but when it loads up and works feze video Ironman intro and everything else, such as options, but when loading the game a message says that the game could not be started and the numbers come up. please can you tell me what is wrong and how to fix it. I'm desperate, help thank you very very much.

Upgrade to 3.90m33 to be able to run them smoothly. Your firmware is very old.

Ironman Iso ON THE PSP