You will need:
Download the 6.60 Official firmware update from the official Sony website. psp 352 m33 upgrade to 660 portable
usage . While 3.52 M33 was a landmark version by Dark_Alex, the 6.60 ecosystem offers vastly superior compatibility for the latest games and homebrew. You will need: Download the 6
Place any ISO or CSO file into the /ISO/ folder on the root of your Memory Stick (create it if it doesn’t exist). For PS1 eboots, place them in /PSP/GAME/ . but the backend stability
Moving from 3.52 M33 to 6.60 is like upgrading from Windows 98 to Windows 10. The interface is familiar, but the backend stability, driver support (plugins), and software compatibility (games) are vastly superior. While the M33 legacy will always be respected, 6.60 PRO/ME is the definitive end-of-life firmware for the PSP.