Well i've tried to run it again but it says "The game could not be started. (80020148)" And when i try to put it in .../PSP/GAME352/ it doesn't read it.

It doesn't read from .../ISO either

Yes i've upgraded to 3.52 m33 today
Edit: When i try to upgrade to 3.71 it says "The game coud not be started. (DADADADA)"