By: [Author Name] Date: [Current Date] 1. Introduction: More Than Just an Update To the average user, PS3UPDAT.PUP is simply a file they download from Sony’s servers when a new system software version is released. To a security researcher, homebrew developer, or console historian, it is a cryptographically signed fortress containing the entire low-level soul of the PlayStation 3—from the hypervisor that locks the hardware down to the Blu-ray driver that spins your game discs.