. Signed into both the account with Max Presitge, Camos, Stats, etc... and the account you wish to copy all this to.
2. Go to the headquarters screen (multiplayer/zombies) Both work
3. Sign into the account that you wish to have everything on and spam B (Fast)
4. Sign into the high level account as soon as the screen goes dark/reading save device (Switch Fast)
5. Go to xbox live
6.go to settings network the hit go offline then go online
7.you should have a netwrok error message
8.click select on your pad click your main account
9. click select again then click your dummy account
10.now hit your udp unicorn and spam A until u get back online
11. go in a game n get a kill boom done

or if youv got an ethernet cable soon as you got the dupe u can pull that out quickly put it back in use the select button method switching profiles then take it out again and out it back in and spam A

METHOD 2.

Pre-step 1: Have a brain and patience
Pre-step 2: Have wired internet connection
Step 1: Do the visual duplication
Step 2: Go into headquarters
Step 3: Lag yourself with UDP Unicorn
Step 4: Go to home, change profile back to dummy account, double tap B
Step 5: Go into score streak training in HQ
Step 6: Unplug ethernet cable and plug it back in asap
Step 7: Should receive error message, hit A
Step 8: Load into TDM and get a kill
Step 9: Congrats, you completed the duplication glitch
Step 10: Brag to everyone CREDIT -ALOHMITCH

If you struggle ill do accounts for you for a little fee off as it take me time to get the accounts to level 2 a create them etc..

level 710 legit stats chrome £15
lvl 1000 £10