help modding

well i have a psp that i havent played in a while and was really wanting to mod it so i could play backup games on it (from the memory stick slot i would imagine). its a really old fat that hasnt had the fw updated in quite some time. it might be under 3.50 (which i think is the lucky number) it might not be. all the stuff i can find is all about the pandoras battery. is there any way to play backups without the pandoras bat or up chip? any links or help would be awsome

information on modding all firmwares below 3.50 here:http://www.makeuseof.com/tag/how-to-downgrade-your-psp-and-upgrade-to-a-custom-firmware-part-one/

eeerrr thanks......i just realized it is actually 4.05 (damn crisis core) forced upgrade. it was like 2. something before i upgraded then i think i need pandoras battery now :(

yes youll need a pandora now, plenty on Ebay.