An unofficial mirror of the original firmware is also hosted on Internet Archive for preservation purposes.
2FA is now a standard requirement for PSN logins on the device. Modding Considerations ps vita 374 firmware link
If the version 3.74 message does not appear, clear your Wi-Fi DNS settings and try again. An unofficial mirror of the original firmware is
While not a major update, the 3.74 firmware brought several notable improvements: ps vita 374 firmware link
: You can no longer create a new PSN account or manage certain account details directly from the Vita.
Make sure your PS Vita is connected to a stable internet connection during the update process.