pup extractor or VitaUpdateBlocker.vita.hacks.guide provide verified hash values.The name follows Sony’s specific naming convention for the PlayStation Vita (codenamed "PSP2" during development). While the original PSP used EBOOT.PBP for updates and the PS3/PS4 use PS3UPDAT.PUP , the Vita utilizes the .PUP (PlayStation Update Package) extension.