Psp 352 M33 Upgrade To 660 Portable !!exclusive!!

Go to Settings > System Settings > System Information . It should now read 6.60 PRO-C . Why Bother?

We will use Hellcat’s Recovery Flasher. This tool is famous for rescuing bricked PSPs, but it is also perfect for upgrading legacy M33 firmware without blowing fuses. psp 352 m33 upgrade to 660 portable

: Update to an intermediate firmware like 3.52 M33-4 or 3.71 M33 if a direct update fails. Go to Settings > System Settings > System Information