Firmware 3.90 M33

The firmware for 3.90 M33 has been released for the PSP. You can install it if your PSP is using 3.52 M33-3 or higher version. You must have 2 item that is the 390m33 and the offical PSP system firmware 3.90. Please click here for the step by step guide>>>
Remember to fully charge your PSP before carrying out the installation.

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