Select > Start > System Update > Update by Connecting to a PC . Manual Update (PS TV only) :
Sony no longer prominently hosts Vita firmware on their consumer websites. However, the update files remain alive on their Content Delivery Network (CDN). Do download .PUP files from random forums—malicious actors embed spyware or brickers. ps vita firmware 3.74 download
If you are downloading the 3.74 firmware to jailbreak or mod your system, it is highly recommended to review the detailed steps on the Vita Hacks Guide . Select > Start > System Update > Update
If you intend to use custom firmware (CFW) like , note that 3.74 is fully supported. PS Vita System Software (US) ps vita firmware 3.74 download