Psp 352 M33 Upgrade To 660 Portable May 2026

Title: Upgrading PSP from 3.52 M33 to 6.60 PRO-C – A Complete Guide

Important Note Before You Start:
If your PSP is a PSP-2000 (TA-088v3 motherboard) or a PSP-3000, you must never fully shut down the device after installing 6.60 PRO-C (unless you install permanent patches like Infinity). For now, follow this guide to get a temporary but fully functional custom firmware.

Step 2: Updating the Official Firmware (The "Official" Way)

To run modern CFW, we need a modern Sony kernel. We will update to OFW 6.60 first. psp 352 m33 upgrade to 660 portable

Step 3: Install Custom Firmware 6.60 PRO-C

Now that you are on OFW 6.60, you can install modern custom firmware. Title: Upgrading PSP from 3

1. Delete the old 371.PBP from your memory stick.
2. Copy the official Sony 5.00 Update (500.PBP) to PSP/GAME/UPDATE/ (Create the "UPDATE" folder if it doesn't exist). Rename it to EBOOT.PBP.
3. Go to Game > Memory Stick and run the "PSP Update ver 5.00" .
4. Note: The Sony updater will scan your system. Since you are on 3.71 M33, it might say "System Software is 9.90." This is a spoofing protection. Don't panic.

   Run CIPL Flasher. This makes the hack permanent (since you have an older PSP-1000/2000). Delete the old 371

   Final Words

   Upgrading from 3.52 M33 to 6.60 PRO-C brings:

   Before installing modern custom firmware, you must be on official Sony firmware.

   • If you want updated plugin/game compatibility and broader homebrew support, upgrading from M33 3.52 to 6.60/6.61 PRO is a worthwhile, commonly adopted move—provided you follow a careful, model-specific installation procedure and stick to legal uses. Expect a modernized PSP experience with a small risk profile if you prepare backups and use trusted installer packages.