Run the tool (included in many PRO-C2 downloads) from your game menu.
Go to and find the option for "Use VSH Menu" . Set it to "VSH Menu".
Ensure your battery is charged to at least 75% . Backup Data: Copy your memory stick contents to your PC.
: Most modern PSP plugins (like CXMB for themes) are designed specifically for 6.60 or 6.61. model is compatible with the permanent CIPL Flasher ? psp 352 m33 upgrade to 660
Sony changed the firmware key structures and update verification protocols in later firmware generations. To reach 6.60 safely, you must utilize a . You must first update your console from 3.52 M33 to 5.00 M33 (or 5.50 GEN-D3) , which updates the internal flash keys, allowing the official 6.60 installer to execute without errors. Step-by-Step Upgrade Guide
Disconnect from the PC. On your PSP, go to Game > Memory Stick and run the .
Run the latest emulators (PS1, GBA, SNES) and homebrew apps optimized for 6.60. Run the tool (included in many PRO-C2 downloads)
If you encounter issues:
When upgrading, you generally have two options. The "M33" lineage effectively ended years ago, so you will be moving to a different custom firmware architecture.
Copy the downloaded EBOOT.PBP (the 6.60 OFW installer) into that UPDATE folder. Your path should look like: Memory Stick -> PSP -> GAME -> UPDATE -> EBOOT.PBP Step 3: Installing Official Firmware 6.60 Fixing the "Version Error" (If Encountered) Ensure your battery is charged to at least 75%
:
This is a major jump to a very stable and well-regarded CFW that serves as a perfect launchpad for the final upgrade.
Your hardware is now completely modernized. You can take advantage of several modern conveniences: