ok i have the pandora set in my PSP, it gave me a menu press x to downgrade using ms0:/ UPDATE.PBP. press 0 to backup nand to ms0:/ nand-dump.bin. press(square) to restore nand from ms0:/ nand-dump.bin. I had a 3.52 firmware, but found it couldnt use homebrew so i got a pandora batt set, i just want to play homebrew (ISO/CSO files) what button do I press? I'm guessing x, right?