I have here a PSP 3000 5.03 gen-c and I can't play games like MLB 11 the show & NBA 2k11. When I start the game the scrren would turn to color gray and says
"The Game could not be started"and then go back to main screen. And theres a number under it (80020148) But I can play games like Tekken 6, MLB 10 the show, UFC undisputed etc..

I don't really know whats the problem here.. Can anyone help me? Thanks..