When you encounter a release from a group like DUPLEX, the files are usually distributed in a series of compressed archives (.rar, .r01, .r02, etc.).

The "DUPLEX" tag indicates the scene group responsible for dumping and packaging the game files. : CUSA27387 (North American Region)

: You must extract the first .rar file using a tool like 7-Zip or WinRAR, which automatically joins the parts into a single .pkg file.

: On a jailbroken PS4, these .pkg files are installed via the Debug Settings or a package manager like GoldHEN .

: Typically requires firmware version 8.52 or higher for the base game. How Scene Releases Work