Released quietly without a formal press release or patch notes, succeeded version 3.73. In the world of legacy console support, file size tells a thousand stories.

If you have been a PlayStation user for the last decade, you know the meme: "This system software update improves system stability." The PS Vita 3.74 update is the ultimate culmination of that joke.

Go to the PlayStation Account Management page on a PC or smartphone.

Downgrading works because 3.74 does not change bootloader or critical modules — Sony only patched userland exploits.

: You can no longer create a new PSN account directly on the PS Vita hardware. New users must set up their accounts using a web browser or a newer PlayStation console before signing in on the handheld. Restricted Account Management

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