High Quality Content by WIKIPEDIA articles! PlayStation Portable System Software is the official, updatable firmware for the PlayStation Portable. Updates add new functionality as well as security patches to prevent homebrew applications being run on the system. Updates can be obtained in four ways: * Direct download to the PSP over Wi-Fi. This can be performed by choosing [Settings], [System Update] from the XMB. * Download to a PC, then transfer to the PSP via a USB cable or Memory Stick. * Included on the UMD of some games. These games may not run with earlier firmware than the version on their UMD. * Download from a PS3 to a PSP system via USB cable.

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