Transformers Video game question?

Question

I have the game for the 360, and I keep trying to type in the invincibility cheat, but it doesn't want to work. I type it in at the menu where you can select campaign, bonus features, and credits. What am I doing wrong. Ign said the cheat was L L UP L R DOWN

Answer 1

ok man i can help you out if you please tell me what game you are using the cheat for please let me know thanks  :)ava06

Answer 2

lemme get my cheatbook.