Need downgrade help

[waterskill]

Is it possible to downgrade my black PSP with TA-082 (IC1003) MOB with firmware version 2.71? If so how, and if not how can I make it to were I can run emulators on it? I've read that it's impossible ( :mad: ) but from what I've read these posts were from 2005- early 2006, so I figured it might have become a possibility. I got my PSP around 2005. So please help? :)

-waterskill