User blog comment:Bovell/E3 coverage of Battlefield 3./@comment-3173376-20110611222815/@comment-1840523-20110612114349

To access the Vietnam map-pack, make sure you have the latest patch for BC2 downloaded. That creates a section in the title named "Vietnam". Now, when you purchase the 'nam map pack from the Xbox Marketplace, it is simply an unlock key, when it is downloaded you simply have to play the game and you can use the Vietnam stuff. So just try playing the vietnam section, and if that doesn't work, then simply find the vietnam download, delete it and re-download it from the Marketplace.