The listing, Pandora Battery to Mod a PSP + Memory Card has ended.
This auction is for a Pandora Battery to put custom firmware on a PSP. The difference between a normal battery and a Pandora is that one wire is cut inside the Pandora allowing the firmware to be changed on the PSP. I got this about 2 years ago and it worked GREAT for my PSP 2000. I don't know if it will work on a PSP 1000 or PSP 3000. Here is everything you get in the auction.