If a player attempts to install a CUSA00900 (North American) DLC file onto a CUSA03173 (European) base game installation, the system will fail to recognize the content.
"Bloodborne.DLC-CUSA00900.rar" is the North American region expansion pack for Bloodborne , known as The Old Hunters . The code CUSA-00900 Bloodborne.DLC-CUSA00900.rar
These are license files. Even if you have the data assets, the emulator or modified console needs the digital signature file to authenticate that the DLC is "unlocked." If a player attempts to install a CUSA00900