I have a psp with fw1.50. I can play all of the older psp games (iso) with emulators but any of the new games just refuse to play. Should i upgrade to another firware? What emulators will work with new games (iso,cso). Ive used umd emulator, devhook, fastloader and none of these will work with the new games.What software should i be using? Games like Tekken, Mortalkombat, whowantstobeamillionaire, kingkong, Cars, ect ect will not work with the emulators that i have when i first started out. Ive run out of options and i need help from someone who knows their psp stuff. Thanks.