Ps Vita System Software Update 374 Updated [extra Quality] Link

Here is exactly what Sony’s official changelog says for version 3.74:

Despite the Vita being a legacy console, Sony continues to maintain the backend services for the PlayStation Store. Update 3.74 was necessary to: 1. Enable 2-Factor Authentication (2FA) ps vita system software update 374 updated

Go to the PlayStation Account Management page on a PC or smartphone. Here is exactly what Sony’s official changelog says

Signing into PSN now requires a unique device password instead of your standard account password to support two-factor authentication. 2022 Current Status: Latest Official Firmware

May 10, 2022 Current Status: Latest Official Firmware