Psp 352 M33 Upgrade To 660

To upgrade a PlayStation Portable (PSP) from the ancient 3.52 M33 custom firmware to 6.60, you cannot jump directly through the standard update menu.

  • Run the Update:

    Preparation

    1. Step 2: Copy the 6.60 official update

      • In X:\PSP\GAME\, create a folder named UPDATE.
      • Copy 660.PBP into X:\PSP\GAME\UPDATE\ and rename it to EBOOT.PBP.
      • Official Sony 6.60 Firmware ( 660.PBP ) – Never download from sketchy forums; get the MD5 verified version.
      • Hellcat’s Recovery Flasher – The "magic bullet" to jump from 3.52 to 5.00 M33-6 safely.
      • 6.60 PRO-C Updater – The final destination CFW.

      Note: Ensure your battery is at least 78% charged and the charger is plugged in to avoid bricking during the process Step 2: Troubleshooting "DADADADA" or Version Errors psp 352 m33 upgrade to 660

    2. Backup saves & plugins – Copy ms0:/PSP/SAVEDATA and ms0:/seplugins to PC.
    3. Disable plugins – Rename seplugins folder to seplugins.bak.
    4. Format Memory Stick (optional but recommended for stability).

    : This acts as a critical bridge between the older 3.xx kernel and newer versions. 3.71 M33 to 6.60 Official Firmware (OFW) : Install Sony's official 6.60 update to clean the system. 6.60 OFW to 6.60 Custom Firmware (CFW) : Re-jailbreak using modern tools like 6.60 PRO-C2 6.60 ME-2.3 Why Make the Jump? To upgrade a PlayStation Portable (PSP) from the ancient 3