I believe so let me find it.
New bypass to use the secondary profile glitch on BOps for free:
( 1 ) Go to main menu
( 2 ) Sign into modded profie on 2nd Controller
( 3 ) Go to xbox live
( 4 ) Wait for it to finish trying to connect
( 5 ) Press A on the error message
( 6 ) wait a few minutes for it to say "Invalid Gamertag"
( 7 ) Press A to close error message
( 8 ) sign out of the modded profile
( 9 ) Press A on the 2nd error message on the 1st controller
( 10 ) Then go to xbox live zombies
( 11 ) wait for the little connecting box to finish loading and select your desired map and there you have it! Maps after 4/28/11 patch. Who is geting the maps