PSP 3.90 M33 Easy Tutorial installation Guide

Note : # For Fat / Phat PSP users You need to have a minimum of 3.52 m33-4 (update no.4 is a must) or higher to install this firmware , this can't be installed on a 1.5 firmware psp . If you don't have it see following the tutorial here.# This custom firmware works for both PSP fat / phat (1000 series) as well as the Slim PSP (series 2000) ,but you can't install the 1.5 kernel on a Slim PSP.#