Thanks to our team and to be honest, to many other inspirational sources, we finally succeed in creating a new, 100% working online crack for MW3. 
It works on PC, Xbox360, PS3 
This crack gives you access to online and local servers.
You can  find instruction for PC here:
Download From link here: 
 OnlineMW3_2.7.0.1----Extract  File--- open Folder ""Patch""" copy all item and past in mw3 folder----  open OnlineMW3_2.7.0.1 folder and copy all item and go paste  in game  folder .
Xbox 360 Download link
PS3 Download link


