Psp 352 M33 Upgrade To 660 Extra Quality [ 2025-2026 ]

Download the files and the Official Sony 5.00 firmware update (EBOOT.PBP) from a trusted homebrew archive.

A reliable Memory Stick Pro Duo (or a MicroSD to MS Pro Duo adapter) formatted by the PSP.

Rationale: 5.00 M33-6 is the oldest CFW that understands the 6.xx NAND structures and has a functional "Network Update" spoof. psp 352 m33 upgrade to 660

Follow the instructions to flash the firmware. Once completed, press Cross (X) or Circle (O) to shut down or restart the console. Your system software will now read . Step 3: Upgrading to Official Firmware 6.60

If you are still on an old firmware, I can provide the files and steps for the 6.61 update instead if you prefer that over 6.60. Just let me know! Download the files and the Official Sony 5

Note: Your PSP is now on official firmware and cannot run homebrew or ISOs yet.

Accept Sony’s terms and let the update complete. Your PSP will reboot into official, unhacked firmware 6.60. Step 3: Deploy Modern Custom Firmware (PRO-C or ME) Follow the instructions to flash the firmware

Ensure ISOs are in ms0:/ISO/ folder (uppercase "ISO") with proper filenames (no special characters). UMD ISO Mode should be set to "Sony NP9660" in VSH menu.