Need help downgrading!

MY PSP IS A 3.52 AND I WANT TO MAKE IT INTO A 3.40 OE-A//// HOW DO I DO THIS

even if i am a new poster i still now this ....THERE IS O GOD DAMN 3.52 DOWNGRADER DUMB donkey

Please read the rules before posting.
Deadownz has your answer but dont ever insult a member again.

EDIT: Hmm looks like your made another topic about this.