Hi, I have 3.40 OEA and whenever I go to run a umd or any emulators or isos from the game folder, my psp freezes. I am thinking about going back down to 1.50 and going back up again. Do I need a 3.40 oe downgrader to 1.50 or there is an option in the recovery menu? And do I have to do anything different when I go back up to 3.40 oea as I have already been at that firmware? Thanks for your help.