To use this feature, you must join PlayStation®Plus service.
When updates are available for applications and system software, automatically download files or automatically synchronize your trophy information with PlayStation®Network servers.
Using this menu item, a list of service items that support the automatic update is displayed. Tap the [Update Automatically] checkbox to remove a checkmark to disable the automatic update of all service items.
Some service items require that your PS Vita system is connected to the Internet using a Wi-Fi connection to start automatic updates feature.