Upgrading from the legacy custom firmware (CFW) to the modern
Directly jumping from 3.52 to 6.60 is risky. The safest route is through , which was the last "golden era" custom firmware. psp 352 m33 upgrade to 660 portable
standard is highly recommended for better game compatibility, more stable homebrew, and easier installation of permanent hacks. The Upgrade Process Upgrading from the legacy custom firmware (CFW) to