Once rebooted, you are now on Official Firmware 6.60. You will notice your ISO games no longer appear. This is normal; we are about to fix that.
Your PSP is now future-proofed. Enjoy your revitalized handheld, and keep that Pandora battery in a drawer—just in case! psp 352 m33 upgrade to 660
Old 3.52 M33 plugins ( .prx files) will work on 6.60. You need to redownload 6.60-compatible versions: Once rebooted, you are now on Official Firmware 6
: Ensure your PSP is charged to at least 78% and plugged into a power source. A power failure during this process can permanently "brick" the console. psp 352 m33 upgrade to 660