Step 1: Sign on to CoD ELITE and go to the Connect feature on the side bar.
Step 2: Click on your clan name
Step 3: Hit manage clan
Step 4: Now I will begin the steps for getting any custom background.
-1: Go to custom background
-2: On the side, it should have a list going down saying Pack 1, 2, 3, 4, 5, etc.
-3: Right click whatever pack you want to unlock and hit "inspect element"(You must have Fire fox or google chrome!)
-4: You should see something like this
-5: Right Click it and select "Edit Attribute".
-6: remove the word "Locked" and hit enter. It should now look like this,
-7: Now, right click the background you want to choose, and hit "inspect Element".
-8: You should find something like this,
-9: Right click it and edit attribute, and remove the word locked from it.
-10: It should now look like this,
-11: Go over the background and hit apply, and save changes. There you go!