DLC often requires the latest Title Update (TU) to function.
To get the "complete piece" working, you must place the files in the correct directory structure. : BorderlandsВ Game of The Year Edition [Jtag/RGH]
Place it in your games directory (e.g., Hdd1:\Games\Borderlands ). : DLC often requires the latest Title Update (TU) to function
Extract the contents of the second disc. You will find a Content folder. BorderlandsВ Game of The Year Edition [Jtag/RGH]
: Press 'Y' on the game icon and navigate to the DLC section to see if all four packs are listed.