Often seen on old M33 firmwares. Use Chili Willy’s KeyCleaner to repair your NAND keys before updating.
Disconnect, go to , and run the PSP Update ver 6.60 . Accept Sony's terms and complete the installation. Step 4: The Final Destination – Install 6.60 PRO-C or ME
Disconnect the USB, navigate to the menu on your PSP, and run the M33 update.
Follow the instructions to flash the IPL, making the custom firmware stick after a full power-off. Step 4: Installing PSP "Portable" Tools (Plugins) psp 352 m33 upgrade to 660 portable
Because 3.52 M33 is so old, you cannot jump straight to 6.60. Doing so will brick your console. This comprehensive guide details the exact stepping-stone process required to safely modernize your PSP. Prerequisites and Requirements
: Newer CFWs like 6.60 PRO-C2 or 6.60 ME-2.3 offer improved stability and better PS1 emulation compatibility. Pre-Installation Requirements
Place the Infinity EBOOT.PBP into a folder named UPDATE inside PSP/GAME/ . Often seen on old M33 firmwares
Congratulations! You've successfully upgraded your PSP 352 to M33 6.60 Portable. Explore the new features and capabilities of your PSP.
: Update to an intermediate firmware like 3.52 M33-4 or 3.71 M33 if a direct update fails.
This comprehensive guide covers everything you need to safely bridge this massive firmware gap. Why Upgrade from 3.52 M33 to 6.60? Accept Sony's terms and complete the installation
: It enables access to the PlayStation Network (PSN) features and improves compatibility with PS1 classic titles when using versions like 6.60 PRO-C Fix 3 .
If you are looking for specific homebrew apps or want to know the best plugins for 6.60, I can give you a curated list. Would that be helpful?