Psp 352 M33 Upgrade To 660 Portable Best Official

Upgrading a PlayStation Portable (PSP) from the ancient firmware to a modern 6.60 custom firmware (CFW)

Intermediate Updates: You cannot always jump directly from 3.52 to 6.60. Some users find they must first update to an intermediate version like 5.00 M33 or 5.50 GEN before the official 6.60 updater will run. psp 352 m33 upgrade to 660 portable

  • Follow the on-screen prompts. Do not turn off the PSP while it writes.
    1. Extract the PRO-C2 archive.
    2. Copy PROUPDATE and FastRecovery folders to PSP/GAME.
    3. Run PROUPDATE from the XMB.
    4. Press X to install.
    5. (Optional) If you want a "Permanent Patch" (so CFW stays after a reboot), launch the CIPL Flasher tool included in the package and press X. Note: This writes to the internal flash (IPL); use with caution.

    Final Verdict: Is it worth it?

    Absolutely. 3.52 M33 was a hero in its day, but 6.60 PRO-C is objectively better. You gain access to: Upgrading a PlayStation Portable (PSP) from the ancient

    If you have a PSP-1000 or an early PSP-2000 (non-v3), you can make the firmware permanent later. Follow the on-screen prompts

    Step 4: Finalizing

    1. Turn your PSP back on.
    2. Go to Settings > System Settings > System Information.
    3. It should display 6.60 ME-2.3 (or similar).
    4. Success! Your PSP is now fully updated with permanent custom firmware.

    The typical path involves jumping from your old custom firmware (CFW) to an official Sony firmware (OFW) before re-applying a modern CFW like 6.60 PRO-C or 6.60 ME.