Hello y'all
I got some problems running some games on my PSP.
System Software 3.03 OE-B (Thanks Dark Alex)
Well... the problem is that some ISO and CSO games does not run.
Whenever I click on them from the Game Menu they show some screens and Music, but whenever I click X it seems that is running but the system shows a black screen...
Questions:
Should I Use DEVHOOK for those games?
What version Should I use if I have to?
Do I need something else instead of Devhook?
Do I have to change any setting from the Config Menu?

These are the Games that I tried and never get to work:
Grand Theft Auto Liberty City (cso file)
NBA Live 07 (cso file)
Marvel Nemesis Rise Of The Imperfects (cso File)
Madden 2007 PSP (iso file)

I got several cso and ISO files that I can run without any problem... so I dont know what is causing this...

I will appreciate all the help u guys can give me...

Thanks!