1.65

Chang Log

 * [Notification Alert] has been added to [Settings], allowing users to toggle alerts on and off.
 * [After 10 Minutes] has been added to time options under [Power Save Settings].
 * Caps Lock is now supported in the On Screen Keyboard.
 * An arrow icon will now display when PS Vita finds new activities in the LiveArea.
 * Addition of installation progress bar for downloaded games and DLC.
 * minis with a pre-set expiry date (such as those obtained via PlayStation Plus) now load correctly.
 * Fixes security issues with two PSP games that allowed users to run unauthorized content on the device through an exploit.

source (The Vita Lounge)