To 660 Portable !!better!! — Psp 352 M33 Upgrade
Upgrading Your PSP from 3.52 M33 to 6.60: A Complete Modern Guide
If you’re still running 3.52 M33 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. psp 352 m33 upgrade to 660 portable
In order to install M33 6.60 Portable, you need to be on 6.60 Official firmware. If you're on an older firmware, you'll need to update to 6.60 first. Upgrading Your PSP from 3
The Solution: You must use a Custom Firmware Enabler (like Hellcat’s Recovery Flasher) or a Light Version Updater to flash the new firmware directly, bypassing Sony’s version checks. released back in 2007