To 660: Psp 352 M33 Upgrade

Copy this official EBOOT.PBP file directly into PSP/GAME/UPDATE/ .

Attempting to run a standard 6.60 updater on 3.52 M33 results in a "DADADADA" error or infinite loop due to version string mismatches and kernel module conflicts.

Before modifying internal flash storage, collect the necessary gear: How To Update Your PSP TO 6.61 Official Firmware

To check your work, go to and ensure it reads "6.60 PRO-C2".

(Note: While 6.61 exists, 6.60 is often preferred for superior plugin compatibility). Phase 3: Installing 6.60 PRO-C2 (Custom Firmware) Now that you are on 6.60, you will install the modern CFW.

With revision 4 active, your PSP can now execute the 5.00 M33 installer, which strips away the old partition limitations.

If you are still running , you are holding a piece of PSP history. This firmware, released by the legendary Dark_AleX in 2007, was the gold standard for homebrew and piracy protection bypass for years.

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Your PSP must be charged to at least 78% . For safety, keep the official AC adapter plugged in throughout the entire update process.

Here is a comprehensive guide to upgrading your PSP from 3.52 M33 to 6.60. Why Upgrade from 3.52 M33?