Ps Vita Firmware — 373 ~upd~ Download Better Work

PS Vita Firmware 3.73: Essential Download and Performance Guide

To ensure the update "works" without bricking or freezing:
Fully power off the Vita.
Hold R-Trigger + Power Button + PS Button until the Safe Mode menu appears.
Select option 3: "Update System Software" > "Update from USB Storage Device" or "Memory Card."

Official firmware updates are distributed by Sony via:
The "Hacking Gateway":

Most modern jailbreak guides suggest updating to 3.73 first to use tools like h-encore² before downgrading to more compatible "golden" firmwares like 3.60 or 3.65. How to Download & Install 3.73 ps vita firmware 373 download better work