You entered a code from your PS3 disc box into the PlayStation Store and paid a small fee to download the native PS4 version.
For advanced users with a jailbroken PS4 , you can bypass the PS4's native OS to run a Linux environment.
Understanding PS3 Game Conversion for PS4 PKG (2026 Guide) The quest to files is a frequent topic in the homebrew community, driven by the desire to play classic titles on newer hardware. However, due to massive architectural differences between the two consoles, there is no "magic button" for direct conversion.