Dark Souls doesn't just give you a menu option for DLC; you have to earn it. in Darkroot Basin.
Go to . Near the first elevator, kill the new Blue Crystal Golem to get the Broken Pendant . Dark Souls [Jtag/RGH DLC]
Modified consoles often need a "nudge" to recognize DLC as licensed. Launch from your Applications menu. Select Check DLC . Dark Souls doesn't just give you a menu