How do you download the Hd texture pack for battlefield 3 on xbox 360?

How do you download the Hd texture pack for battlefield 3 on xbox 360? I have no idea how to get it. Is it part of the update? i have no idea.|||It is supposed to come in the multiplayer disc (Disc 1). You must install it into the Hard Drive for this feature to work.|||Not sure that's possible.