Hi,
I know someone or the other has put up tutorials, but I seem to be stuck.

I recently bought a PSP Giga Pack, which has 2.71 FW on TA-082 board.

I didn't need to downgrade to 1.50. Used HEND and DevHook installer I got off this site which included 0.4X and 0.51 (emulating 3.02)

But I have a problem now.
I downloaded the full ISO file of Def Jam (PSP) and had it compressed to a CSO file.
I loaded Devhook 0.51 and it's showing the game on my XMB menu. But when I select the game to play, I just get a black screen. I thought maybe it takes a long time to load, but nothing happened and I cancelled the operation.

COuld someone guide me on this? What an i doing wrong?
Thanks a million.