Psp 352 M33 Upgrade To 660 Portable |best|

Upgrading from the legendary 3.52 M33 custom firmware (CFW) to 6.60 is a essential transition for modern PlayStation Portable (PSP)

Step 2: Download the M33 6.60 Portable Firmware psp 352 m33 upgrade to 660 portable

Troubleshooting Common Issues

"Game could not be started (80020148)": This usually means the update file is corrupted or placed in the wrong folder. Ensure the 660.PBP is the official Sony update, not a custom one.
Black Screen after flashing: If the PSP doesn't boot, you may have a brick. If you are on a PSP-1000 or an early PSP-2000 (with a TA-085 v1 motherboard), you have a Pandora Battery service mode available to unbrick. Later models (3000/Go) are much harder to recover if the permanent patch fails, which is why temporary CFW is safer for those models.

Step 2: Installing 6.60 OFW (Official Firmware)

To get to the latest version, you must first install the official Sony firmware. Upgrading from the legendary 3

Troubleshooting & Tips

Game Errors: If older homebrew stops working, you may need to install the 1.50 Kernel Add-on for 6.60 ME.
"Corrupted Data": Ensure the folder names are correct and do not contain extra nested folders (e.g., UPDATE/UPDATE/EBOOT.PBP is wrong).
Permanent Patch: On PSP 1000 and early 2000 models, the ME installer usually writes a permanent patch so you do not need to re-run the installer after a reboot.

Important caveats (read first)

Upgrading firmware involves risk. Follow instructions precisely.
If your PSP is a PSPgo, slim/3000, or any model with different flash layout, check model-specific guides before proceeding.
Ensure battery is well charged and never interrupt the process.
Back up your EBOOTs, savedata, and anything important on the memory stick and, if possible, dump your NAND/flash before modifying system firmware.
Legality: Only run games you legally own. This guide focuses on homebrew/CFW maneuvers.

The upgrade path is stable. I have never bricked a PSP going from M33 to PRO. As long as you follow the steps (Update to Official 6.60 first), you are safe. "Game could not be started (80020148)": This usually

Enjoy your freshly upgraded “660 portable” PSP!