To upgrade your PlayStation Portable (PSP) from the legacy custom firmware to the modern
Updating directly to the latest firmware is generally supported on a 1000 or 2000 model running 3.52 M33. : Get the official 6.60 firmware update (EBOOT.PBP). Prepare Media : Connect your PSP to a computer. Create a folder named inside the folder on your memory stick. : Copy the file into that Run Update : On your PSP, navigate to Game > Memory Stick and launch the 6.60 update. psp 352 m33 upgrade to 660