you have to learn about the pandora's battery. which is the one they use today for changing/downgrading original firmwares to change it into a custom firmware. if you know someone who has one, papalitan mo ng firmware. pag wala, mahirapan ka pa nyan. unless uuwi ka dito sa philippines. or.. buy a new battery and an extra memstick for your own pandora's box. meron atang nabibili na ready made na. not sure lang... pero these kind of things kasi will be too complicated for a newbie sa psp scene. so its either you study how to modify your psp or find a person there in calgary who can help you with it.
if you want more information about the pandora's battery, some of the members here in espiya can help you and refer you to some sites about the psp scene..