i unbricked one PSP. Its Very easy when u do the tings from the readme. The other thing is that u can recover ur battery and use it like a normal one. The whole process took me about 20 mins to unbrick then install m33-4 and then put a custome theme. I use mine psp my mem stick and the other guys battery. He helped too. theres one thing i forget to backup my data sooo 20hrs MGS PO 30 hrs Ratchet and clank and other RPG savegame's r gone.
sry bout my english