Place your DLC's .rap license file inside that exdata folder.
The region of your DLC must perfectly match the region of your base game (e.g., North American BLUS or European BLES). You can check your game code by looking at the spine of your physical disc or via your game properties in multiMAN. rocksmith 2014 ps3 dlc pkg install
Navigate back to the main drive list and open dev_hdd0 (your internal PS3 hard drive). Place your DLC's
Ensure you have a homebrew file manager installed on your PS3, such as multiMAN or IRISMAN. Correct File Formats: rocksmith 2014 ps3 dlc pkg install