Here is the guide to safely bridging the gap from the M33 era to the modern 6.60 standard.
You cannot directly jump from 3.52 M33 to 6.60 PRO-C. You must first revert to Official 6.60 firmware.
Because 3.52 M33 is a very old "Open Edition" firmware, you cannot directly jump to 6.60 without risks. We must take a "stepping stone" approach to ensure the system doesn't brick. Phase 1: Upgrading to a "Bridge" Firmware (5.00 M33-6) psp 352 m33 upgrade to 660 portable
Backup any personal game saves ( /PSP/SAVEDATA/ ) onto your computer desktop.
Make sure you are putting the update in PSP/GAME/UPDATE . Here is the guide to safely bridging the
This method is the most straightforward and is highly recommended. It involves several safe, intermediate steps to bring your firmware up to date.
If you’re still running on your PlayStation Portable, you are sitting on a piece of history. This custom firmware, released back in 2007, was revolutionary for its time. However, in the years since, Sony released numerous official updates (up to 6.61), and the homebrew scene has evolved dramatically. Because 3
This is the first mandatory upgrade. Perform this step to ensure the next CFWs install correctly.
To get the best experience, you'll want to install modern plugins.
Modern PSP games require higher firmware keys. On 6.60, you can run any ISO or CSO file without patching.