Help with Borderlands 2 DLC

Well, I’ve had a crappy time trying to get this to work. I’ve downloaded the Borderlands 2 DLC, which is DRM free, and injected it into my flash drive. My xbox didn’t say it was corrupt, and I transferred it to my Hard Drive without a problem. However, it won’t actually load in the game, and I deleted and redownloaded the update to be sure. Have I missed a step?

make sure you add all of the files including the compatibility one and dont resign them

Thanks for the fast reply! I skipped over the compatibility pack so i’m assuming thats why they won’t load