look at the post right under u that i just posted exactly what un need

here you go bro!!!!!!!!!!

Okay, as long as you have modio and a gpd file your good to go,

1 on xbox go to system settings. memory, then cod black ops and delete title update # 3, then press "Y" over hard drive and clear sytem cache,

2. Put profile on usb and then on computer, open modio(go to device in the big M then open your usb and find your profile) and extract profile onto your desktop then open your profile into modio.

3. once profile is done loading go to file contents and right click, inject file into current root. Go through your desktop or folder you put your dpg in and double click on that.

4. Rehash and resign. Go to the USB and delete your profile(non modded profile) and inject your modded profile(which is on desktop.)

5. Safely remove your flash drive or USB memory stick(same thing) and put it on the xbox, then go to memory, portable device(flash drive) and move modded profile on hard drive, the remove flash drive(just in case of title 3 update) and go to black ops and play what ever the gpd was meant for(do not i mean do not update or just in case just remove wire or wireless) good luck

You have no rep to give but here you go Forums/viewtopic/t=667182.html its a very detailed tutorial by the way easy to follow