i just bought new DVD collection game,but my computer cannot read the dvd..i dont know why,but when i try with other pc,its working..but something confusing me becoz the format for all that games are .cso and not .iso that installed in my memory stick...

so is it possible for my psp slim( 3.80 M33-4) to play that kind of format?i am so worried about that....

another question, i love playing JUICED 2,but suddenly i noticed that i need to press X harder than before to move the car...i think my X buttton already rosak...noooo....

what are the latest firmware for psp? is it okey to stick with my current firmware?

what are the difference between custom firmware and offical firmware?

and how to put picture icon on my mp3 tracks?teach me step by step...

is it possible to play older and current games if i update my psp to 3.80 m33-5?

and is it possible my current data may be lost if i update my psp?

currently im using 3.71 m33-4.....the salesmen allow me to do update at his shop for free,but malas to go ...i want to do it by myself...