You still cannot jump straight to 6.60. The system needs to be on at least a 5.xx generation firmware so the official Sony 6.60 installer can recognize the system configuration. We will bridge this gap using .
Because you are jumping across several generations of firmware, you cannot always update directly via the standard Sony network update. You must use the storage media method. 1. Hardware Checklist
With your upgraded 6.60 configuration, your legendary PSP-3000 is fully prepared to handle the absolute best of homebrew, backups, and classic emulation for years to come. To make sure your upgrade goes smoothly, let me know: psp 352 m33 upgrade to 660 portable
To get to the latest version, you must first install the official Sony firmware.
Extract the package. You will see folders like PROUPDATE , CIPL_Flasher , and FastRecovery . Copy these folders to PSP/GAME/ on your PSP. Disconnect and go to -> Memory Stick . Run PRO Update . Press X to install the custom firmware. You still cannot jump straight to 6
Enjoy your upgraded PSP! With 6.60 PRO-C, you can now play all the latest PSP games, use modern plugins, and explore a vast library of homebrew content.
Extract the archive. Inside, you will see folders named PROUPDATE and FastRecovery . Because you are jumping across several generations of
Since your device is already running M33, it is a "fully hackable" model. The firmware is the best choice for permanent installation. Download the 6.60 ME-2.3 (or 6.61) installer. Place the UPDATE folder into ms0:/PSP/GAME/ . Launch the installer from the Game menu. Follow the on-screen prompts to flash the firmware. The PSP will reboot into a permanent 6.60 ME state. ✨ Benefits of the Upgrade
For years, the 3.52 M33 custom firmware (CFW) was the gold standard for PlayStation Portable hacking. Created by the legendary developer Dark_Alex, it unlocked the true potential of the PSP. However, modern homebrew, plugin compatibility, and newer ISO releases require a modern firmware base. Upgrading from 3.52 M33 directly to 6.60 or 6.61 Custom Firmware ensures maximum compatibility while retaining your ability to run portable homebrew, emulators, and backups.
Now that your update is complete, you can optimize your memory stick architecture for modern portable use: