What steps will reproduce the problem? 1. Just launch the game ISO

What is the expected output? What do you see instead? The game home screen. Instead, the PSP stay in black screen.

What version of the product are you using? On what operating system? PSP 6.60 - PRO C2

Please provide any additional information below. Before updating my PSP to the 6.60, the game were working fine.

1. what was your previous CFW?
2. Did you disable all plugins ?(plugind from your old CFW will not be compatible with new CFW).