Sony recently released system software update version 3.74 for the PlayStation Vita and PlayStation TV. While the handheld is over a decade old, this mandatory update introduces critical changes to how users access the PlayStation Network (PSN) and manage their accounts. Key Changes in Update 3.74
Navigate to Settings > Start > System Update > Update Using Wi-Fi . Follow the on-screen prompts; the device will reboot automatically once finished. ps vita system software update 374 updated
If you find yourself logged out after installing version 3.74, follow these steps to regain access: Sony recently released system software update version 3