Xbox trainer help

[SevenPoint]

I need some sort of ultimate FAQ on xbox trainers because nomatter what i do i can't get them to work.

This is what is happening to me right now:

I don't know my dash #, but i bought my box premodded and it already had some trainers installed. It has a trainers section and i can access any trainer via my evox dash. I'm trying to use a Ninja Gaiden Hurricane Pack trainer i found. The .nfo doesn't say anything special, but even after i activate all the items i want from the trainer menu, save and exit, start the game, nothing seems to happen. It doesn't help that i'm not sure if the trainer itself even would work, but i don't know if i'm doing everything right.

Anyone a master of xbox trainers?

-BenE