First your going to need a jailbroken PS3 running Any CFW 3.55 (I am running Rebug 3.55.2)
Then delete your game data (save it somehow before deleting)
Install the 1.09 Patch from the *Install Package Files tab under the game category for your game region (Check the side panel of your box)
Install (ZombieKillah v2.1 for you Region)
Boot up Black Ops from HDD (Using Multiman or Any Other backup manager) or from Blu Ray Disc
Decline Patch Update 1.13 by Pressing (O)
Press [Select] to Activate God Mode, Death Machine, +Speed, +Knife
Press [<-] for UFO Mode On (Used to fly around the whole map, go through walls and get on top of things)
Press [->] for UFO Mode Off
Press [ ^ ] for All Weapons (Includes AK47 from the Multiplayer)
Press [ DPAD Down ] For Deleting a Zombie (Only works if you can see them)
Extra Uncontrolled Mods:
FPS in top right corner
Increased Bullet Damage
Zombies will float up towards the sky (Also stick to ceilings)
*If you chose the map kino de toten All Weapons Mod will give you Raygun Upgraded, Python Upgraded, Calamity, Ak47, Zeus Cannon Upgraded, Weapon Default (Hands), Default Pistol Upgraded.
*If you chose the map Five the All Weapons Mod will give you Raygun Upgraded, Python Upgraded, Calamity, Ak47, Weapon Default (Hands), Default Pistol Upgraded, M14 Upgraded, Infinite Death Machine.
*If you choose the map Dead Ops Arcade press [Select] to activate GOD Mode. (Thats all that you get)
I don't have the other maps to try them out on. I know their is a way to get them by using ReACTPSN.