I recently posted my Zune on craigslist, and somebody emailed me asking if they could trade me their PSP for it. I asked for the hardware model and firmware and they said that it was, "PSP 1001 Firware 5.50 if you need you can down grade it. 3 games, charger, 512mb card". If I was to get this PSP, I'm wondering how hard it would be to mod it to the point of playing back-ups and/or homebrew. Will I need to downgrade the firmware? Get that special battery? Any help is appreciated.