Update the PS Vita
Updating your PS Vita firmware is simple; it provides the latest security patches, new features, and other goodies to keep your device fresh and exciting.
Follow the simple steps to update the PS Vita firmware (Via Wi-Fi)
Make sure your PS Vita is connected to the internet.
Press the Settings icon from your home screen. Tap Start.
Tap the System Update from the menu.
Tap Update Using Wi-Fiand follow the onscreen instructions. As you can see, you can also download the latest software using your PS3 or computer.
Note: Do not remove the memory card or turn off the power during updating.