n00bs.

The real code is Up Up Down Down Left Right Left Right B A.

^^^lol

 Contra!

aha! nice work man!

i'll try it normal, and if i can't beat it (or just for fun!) I'll use these cheats

"we've got all the cheats right here!"

I hope they are using "all" loosely.  I would think there would be more cheats than that.  At the very least weather cheats.  Not to mention the random fun cheats they took out like flying cars, super jumping, various car/pedestrian changes, etc.

im happy that rockstar don't forgot the cheat

This is the official site for the GTA IV cheats. people. Cheats are exactly the same on both PS3 and 360.
http://www.gtaivcheats.net/

Dial all cheats into Niko's cell phone:

Health
482-555-0100
Armor
362-555-0100
Weapons #1
(Baseball Bat, Handgun, Shotgun, MP5, M4, Sniper Rifle, RPG, Grenades.)
486-555-0100
Weapons #2
(Knife, Molotovs, Handgun, Shotgun, Uzi, AK47, Sniper Rifle, RPG)
486-555-0150
Remove Wanted Level
(Blocks achievement "Walked free")
267-555-0100
Raise Wanted Level
267-555-0150
Change Weather/Brightness
468-555-0100
Spawn Annihilator
359-555-0100
Spawn Jetmax
938-555-0100
Spawn NRG-900
625-555-0100
Spawn Sanchez
625-555-0150
Spawn FIB Buffalo
227-555-0100
Spawn Comet
227-555-0175
Spawn Turismo
227-555-0147
Spawn Cognoscenti
227-555-0142
Spawn SuperGT
227-555-0168
Complete Map - (with weapon, health, armor, pigeon, etc. locations)
Enter the URL "www.whattheydonotwantyoutoknow.com" into computers in the game

da cheat is grounded

http://www.computerandvideogames.com/article.php?id=187715

^Check it out if you need help with the GTA IV. All main missions are in this article