Psp 352 M33 Upgrade To 660 May 2026

Upgrading from 3.52 M33 to 6.60 is a significant leap that brings your PSP into its final era of functionality. You will lose the nostalgic M33 recovery menu, but you will gain the ability to play the entire PSP library without patching files, run superior emulators, and utilize a much more stable system. The upgrade is a necessary step for any PSP enthusiast looking to get the most out of their hardware today.

To upgrade a Go to product viewer dialog for this item. from 3.52 M33 to the standard 6.60 (or modern custom firmware), you must take a multi-step approach. Because 3.52 M33 is an extremely old custom firmware (CFW), modern installers often won't recognize it or will throw errors like "9.90 version" or "DRN FF FF CD".

The most stable path is to bridge the gap using intermediate updates or cleaning the system before applying the final 6.60 firmware. 1. Preparation and Safety

Battery Charge: Ensure your PSP is charged to at least 78% and plugged into a power source. A power failure during this process can permanently "brick" the console.

Storage: You need a Memory Stick with at least 50MB of free space.

Check Version: Confirm your current version in Settings > System Settings > System Information. 2. Resolving the "Version 9.90" Error psp 352 m33 upgrade to 660

Many M33 users encounter an error stating their version is 9.90, preventing updates. This was a "spoof" meant to stop Sony from forcing official updates. Completely shut down the PSP.

Hold the Right Trigger (R) while powering on to enter the Recovery Menu.

Go to Configuration and find the option for "Use VSH Menu". Set it to "VSH Menu".

Exit and restart. Press Select on the home screen (XMB) to open the VSH menu. Change USB Device to Flash 0. Connect to a PC. Open vsh/etc/version.txt. Change release:9.90: to release:3.52:. Save and exit.

Crucial: Change the USB Device back to Memory Stick in the VSH menu before proceeding. 3. Upgrading to Official Firmware (OFW) 6.60 Upgrading from 3

To move to modern CFW, you must first reach the official 6.60 baseline.

Download the OFW 6.60 EBOOT.PBP file from a reliable source like the Official PlayStation Manuals or WikiHow Guide.

On your Memory Stick, create the folder path: PSP/GAME/UPDATE/. Place the EBOOT.PBP inside the UPDATE folder.

On the PSP, go to Game > Memory Stick and run the 6.60 Update. 4. Installing Modern Custom Firmware (6.60 PRO or ME)

Once on OFW 6.60, you can install a modern, stable CFW like 6.60 PRO-C2. Download the PRO-C2 files. Copy the PROUPDATE and FastRecovery folders to PSP/GAME/. Run PRO Update from the Game menu and press X to install. Once you are booted into 6

(Optional) If you have a PSP 1000 or early 2000, run the CIPL Flasher to make the firmware permanent. For newer models, use FastRecovery if the console restarts.

Troubleshooting Note: If you receive a "DRN FF FF CD" error during the official update, you may need a tool like KeyCleaner to repair "bad keys" in your system's internal memory that were corrupted by early CFW versions. How To Upgrade to PSP 6.60 PRO-C2 Custom Firmware [2021]

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.

Yes, but 3.52 saves are generally fine. If you get "Corrupted Data," use MagicSave or FreeCheat to resign the save files to 6.60 standards.

Once you are booted into 6.60 Custom Firmware:

Some very old saves from 3.52 M33 may show as “Corrupted Data” on 6.60. Use MagicSave or Savegame Deemer to re-decrypt and re-encrypt them for 6.60.