How to put 3.71m33 custom firmware on a sony psp slim

Hello today im going to show you how to put custom firmware on a sony psp slim. I am using a PANDORA BATTERY and a MAGIC MEMORY STICK.
i made the pandora battery out of my psp fat. and i just installed the magic memory stick files on my memory stick.
Tags: battery, custom, firmware, install, jigkick, magic, memory, pandora, Psp, slim, stick