hey all,

not had a psp for a year or two now, and need to update myself with what can and can't be done with em....

can any model be altered to custom firmware? or up to a certain model?
Whats the average size of iso nowadays? for things like GTA Chinatown wars/assassins creed and what have you? (so i know what size card to get)

and does anyone have one they don't want anymore and wants to sell?

thanks y'all
Russbeer