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    • Every physical and digital game released for the PlayStation 3 carries a unique "Product Code." These codes are standardized across the industry to help retailers, databases, and consoles recognize the title and region.

  • 31011 = The specific title ID assigned to Demon’s Souls by Sony Computer Entertainment America.

    • To understand "blus31011 dlc pkg portable," you must understand PKG.

    PKG (Package) is the native installation file format for the PlayStation 3, PlayStation Vita, and PlayStation 4. It is analogous to .exe on Windows or .apk on Android. A PKG file contains compressed, signed data that the console’s operating system unpacks to the hard drive.

    Play Demon’s Souls on a PC with the 60 FPS DLC mod, all inside a folder on an external drive that can be moved between computers.

    Historically, DLC is tied to a specific console’s internal drive or a user account. The "Portable" approach changes the workflow: