Psp 352 M33 Upgrade To 660 Portable [upd]

Yes, 6.61 is identical in functionality to 6.60. The steps are the same, just use the 6.61 PRO-C2 files. Will this destroy my old 3.52 M33 games?

To jump from 3.52 M33 to 6.60, you must first install the official Sony update. How To Update Your PSP TO 6.61 Official Firmware psp 352 m33 upgrade to 660 portable

That is the "Portable" suffix in your keyword—modern custom firmware that is fully portable across all PSP models. Yes, 6

Now we turn that official firmware into a permanent custom firmware. psp 352 m33 upgrade to 660 portable

Now that you are on official 6.60, you can install the custom firmware. Download the package.

Here is the guide to safely bridging the gap from the M33 era to the modern 6.60 standard.