go to www.psp-hacks.com and search in the forums for tutorials. I mod my psp 3000 and 2000 with the help from the guys over there. you could easily mod your fat psp by using chickhen and the downgrader (or you could just create your own pandora battery since you have phat), now no need for the silly pandora battery.. dont go to souqs since they will overcharge you for just a couple minutes of their time inserting a pandora battery..