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The PlayStation Vita system software is the official firmware and operating system for the PlayStation Vita and PlayStation TV video game consoles. It uses the LiveArea as its graphical shell . The system is built on a Unix -base which is derived from FreeBSD and NetBSD .
The software may be updated by downloading the update directly on the PlayStation 3, downloading it from the user's local Official PlayStation website to a PC and using a USB storage device to transfer it to the PlayStation 3, or installing the update from game discs containing update data.
Custom firmware allows the running of unsigned code such as homebrew applications, UMD.ISO files, emulators for other consoles and PS1 games when the disc images are converted into an EBOOT file. [17] This is in stark contrast to the official system software, where only code that has been signed by Sony can run.