It is crucial to distinguish between the standard Dark Souls 2 and Dark Souls 2: Scholar of the First Sin . They are treated as different games with different Title IDs. If you have the standard ISO, you must download the DLC specifically for the standard version. If you have the Scholar of the First Sin ISO, the DLC is usually integrated, but you may still need the Title Update to unlock it fully.
Installing DLC on a Reset Glitch Hack (RGH) console requires a specific folder path. Follow these steps to ensure your "new" ISO or extracted files work correctly: descargar dlc dark souls 2 xbox 360 rgh iso new