i downgraded my psp 1000 from 6.35 to 5.00 m33-6,and when i try to start tekken 6 i got this error "The game could not be started.(80020148)"
what should i do now to can play tekken 6??please answer me
i followed this tutorial : http://www.youtube.com/watch?v=WP4P8uSkACs

edit:i dont have pandora batery...