660 | Psp 352 M33 Upgrade To

Cause: 3.52 M33 homebrew often required 1.50 kernel. Fix: Delete the old homebrew. Download updated versions compiled for 6.60. Almost every emulator has a 6.60 compatible version.

Depending on your motherboard:

Now that the system core is updated, we patch it to run homebrew and backups again.

  • Install the Files:
  • Run the CFW Installer:

    • Sometimes, developers release specific updaters for PSP models to transition from one CFW to another more easily. These are not always available but are the simplest method when they are. psp 352 m33 upgrade to 660

    Now we install the modern, superior CFW.

    6.61 exists, but 6.60 PRO-C remains the gold standard. It has 99.9% compatibility with everything, including 6.61 games via version spoofing. Stick with 6.60.

    Appendix A: File Checksums (SHA-1)

    Appendix B: Version Comparison Table
    (Included in Section 5.1)

    Document ends.

    To upgrade a custom firmware (CFW) to the final you must first transition to Official Firmware (OFW) 6.60 before optionally reinstalling a modern CFW like 1. Prepare the PSP Charge the Battery : Ensure your battery is at least to avoid a brick. Clear Plugins : If you have plugins running, disable them in the Recovery Menu (hold R-Trigger while booting) to prevent update errors. Memory Stick : Use a Memory Stick with at least of space (32MB is insufficient for newer updates). 2. Install Official Firmware 6.60 Cause: 3

    Updating directly from such an old version sometimes triggers errors like "9.90" or "DADADADA" because of the version spoofing in old M33 firmwares. Download the 6.60 OFW : Obtain the from a reliable source like the ConsoleMods Wiki : Connect your PSP to a PC via USB. Create a folder named /PSP/GAME/ on your memory stick. : Copy the into that folder so the path is ms0:/PSP/GAME/UPDATE/EBOOT.PBP Run Update : On your PSP, navigate to Game > Memory Stick and launch the 6.60 Update If you see a "9.90" error: Recovery Menu Advanced > vshmenu , and set "USB Device" to "Flash 0". Connect to a PC, open vsh/etc/version.txt , and change "release:9.90:" to "release:3.52:". 3. Install Modern Custom Firmware (Optional) Once on 6.60 OFW, you can install 6.60 PRO-C2 for homebrew and ISO support. PSP: Updating from the 3.xx OE CFWs to the 6.60 ME CFW

    Here’s a complete, step-by-step guide to upgrade your PlayStation Portable (PSP) with Custom Firmware 5.50 GEN-D3 / 5.50 Prometheus (or 5.00 M33-6) directly to 6.60 PRO-C2 (or 6.61 PRO-C2), including all necessary files and precautions.

    Note: There is no such thing as "PSP 352 m33" – you likely mean 3.52 M33 (a very old custom firmware). The process below works from 3.52 M33 or higher (including 5.00 M33, 5.50 GEN, etc.) to 6.60 PRO-C. Now that the system core is updated, we

    Document ID: PSP-CFE-2025-01
    Version: 1.0
    Target Audience: PSP enthusiasts, retro console modders, firmware analysts