6.31fw

Hi ppl... Sorry,but i didn't find any post explaining how to hack a PSP FAT(1000 i think) with 6.31 FW.(if i did wrong open this thread,pls tell me and i delete) So i have a PSP FAT(1000 i think) with a firmware 6.31 and i dont have a pandora battery...How can i hack it to play current ISO...