Well this is my Theory.
Requirements:
2 Controllers
Level 1 account w/ no games played
Friends
5 hours of time
Patience
Trick:
It all depends on the time zone. I live in California. So all those people that lives in California, must do this @ 4p.m or before and stop @5 pm. I don't know about other time zones, but I'll make a chart for time zones when to start & when to end.
Steps:
Step 1: Go to Multiplayer
Step 2: Go to player match
Step 3: Press O
Step 4: Lan Party
Step 5: Create mode (Nuketown, S&

, Unlimited time/lives, No killcam, 1 round.)
Step 6: Highlight start game & press Triangle
Step 7: Look for a friend that's in a game & press square.(Press O 3 times. It should bring you back to Lan party)
Step 8: Connect your second Ps3 controller.
Step 9: Create match (It should be @nuketown and there should be a star right next to S&

)
Step 10: Start game (Make sure you are the bomber & if you are not, back out & start the game again)
Step 11: Level up to 50 w/ 0 xp left.
Step 12: Prestige & do not start any online matches
Step 13: Go back to Lan & do the glitch 1 more time.
Step 14: Just reach to level 14.
Step 15: Stay in game & wait for 4 hours then end the game.
Step 16: Play an online match & back out.
Step 17: Quit game.
Step 18: Switch accs & log back in.
Step 19: Go on BO.
Step 20: +Rep if I helped.

---------- Post added at 08:58 PM ---------- Previous post was at 08:57 PM ----------
Originally posted by xeyerericx
Is this patched, or not? Like, as of right now. It worked yesterday but I don't want to try again if im just going to be wasting my time.
It still works. I'm Prestige 12 atm