I can provide the exact files and final steps to lock in your setup. Share public link
Released by Team M33 in 2007, 3.52 M33 was a revolutionary custom firmware (CFW) for its time, but it has major limitations today:
(Optional) If you have a PSP 1000 or early 2000, run the to make the firmware permanent. For newer models, use FastRecovery if the console restarts.
I can provide troubleshooting steps to help you safely complete the update path. AI responses may include mistakes. Learn more Share public link psp 352 m33 upgrade to 660
The 3.52 M33 firmware, originally crafted by legendary developer Dark_Alex, was a masterpiece of its era. However, leaving your PSP on this software restricts your console in several ways:
: Access to PlayStation Network services and digitally purchased games that require higher firmware. Improved Emulation
Extract the update files and place the M33Update4 folder inside PSP/GAME/ on your Memory Stick. I can provide the exact files and final
Connect your PSP to your PC via USB cable and navigate to Settings > USB Connection .
Upgrading your PlayStation Portable (PSP) from the classic 3.52 M33 custom firmware (CFW) directly to the modern 6.60 official or custom firmware requires a specific multi-step path. You cannot jump directly to 6.60 due to architectural differences in the older M33 code, which will cause a system error or a brick.
With your PSP resting cleanly on official version 6.60, you can choose your preferred modern custom firmware environment. The two standard options are or 6.60 ME-2.3 . For legacy PSP 1000 and 2000 models, 6.60 ME offers an excellent permanent installation. Download the 6.60 ME-2.3 (Permanent Installer) archive. Extract the files and look for the me_installer folder. Copy me_installer into your PSP/GAME/ directory. Launch the 6.60ME Installer from your XMB interface. I can provide troubleshooting steps to help you
Download the file from a reliable source like the Official PlayStation Manuals or WikiHow Guide .
On the PSP 1000 and most PSP 2000 models, you can make the custom firmware permanent so it stays even after you shut down the console.
Ensure your PSP battery is at . During the flashing process, a power loss will brick your device. Play it safe: keep the AC adapter plugged in.
Extract the update files. Move the M33Update4 folder into the PSP/GAME/ directory on your Memory Stick.