Psp 352 M33 - Upgrade To 660 !free!

From Retro to Modern: Upgrading Your PSP from 3.52 M33 to 6.60

If you are still running Custom Firmware 3.52 M33, 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.

However, the PSP scene has evolved significantly. Staying on 3.52 M33 today limits your ability to play games released after 2007, prevents you from using the PSN Store (historically speaking), and blocks access to modern homebrew engines like the popular gPSP Kai (GBA emulator). psp 352 m33 upgrade to 660

Upgrading to 6.60 (the final official firmware revision) is the best way to modernize your console. Here is the breakdown of why and how to do it. From Retro to Modern: Upgrading Your PSP from 3

Step 4: Install 6.60 PRO-C2

  1. Download PRO-C2_660.7z from a trusted source (e.g., wololo.net, pspunk.com).
  2. Extract:
    • 660_PRO-C2 folder → copy to X:\PSP\GAME\
    • CIPL_Flasher folder → copy to X:\PSP\GAME\ (if you have PSP-1000 or 2000 non-v3)
  3. On PSP (now OFW 6.60), go to Game → Memory Stick™ → PRO-C2 Fast Recovery (run once to install CFW temporarily).
  4. You’ll see “Press X to launch” – press X. PSP restarts into 6.60 PRO-C2 CFW.

Emergency Recovery (Bricked PSP)

  • PSP-1000/2000 non-v3 – Pandora battery + Magic Memory Stick.
  • PSP-3000/Go/E1000 – Use Chronoswitch Downgrader v7.0 from recovery menu (hold R on boot).

For PSP-1000 & 2000 (non-v3) – Permanent patch:

  1. After PRO installation, run CIPL Flasher.
  2. Accept warning – writes to flash0:/kd/ipl.bin.

3. Charge Your Battery

Ensure your PSP battery is at 75% or higher. During the flashing process, a power loss will brick your device. Play it safe: keep the AC adapter plugged in. Download PRO-C2_660

For PSP-3000/Go/Street Users: Use Infinity 2.0

  1. Install OFW 6.61 (or 6.60 – Infinity works with both).
  2. Download Infinity 2.0 and run it first.
  3. Then install PRO-C2 (or LME), and use Infinity to make it permanent.

2. Introduction

Conclusion: Welcome to the Modern PSP Era

Congratulations! You have successfully upgraded your PSP from the classic 3.52 M33 to the powerful and stable 6.60 PRO-C2. What have you gained?

  • Play the entire PSP library – No more “game requires 5.50 or higher” errors.
  • Use modern emulators – Full-speed N64, TurboGrafx-16, and improved GBA emulation.
  • Enjoy plugin compatibility – Custom themes, remote joypad, screenshot tools, and more.
  • Access PSN & online features (with version spoofing).

Your PSP is now future-proofed. Enjoy your revitalized handheld, and keep that Pandora battery in a drawer—just in case!