- Create a UPDATE folder in PSP/GAME/ folder of your memory stick - Copy EBOOT.PBP (update 1.50) in UPDATE folder - Unpack MPHDowngrader.zip - Copy overflow.tif in your PSP/PHOTO/ folder of your memory stick - Copy h.bin in root of your memory stick - Copy index.dat in root of your memory stick - Plug the AC adaptor
Then, enter in VSHELL PHOTO MENU, this will launch Version Changer.
an USB connection and if the Version Changer has been installed, a new
file is created in your root of your memory stick (ms0:/index.dat.bak).
Then go to VSHELL GAME MENU and launch 1.50 update.
Follow the instructions ...
The installation will stop at 99% but it's normal, continue follow the instruction