Maybe do something with the files in your modern warfare 2 folder.
aIW.dll rename it to something else just incase
Edit the caches.xml with your favorite text editor
Code:
<?xml version="1.0" encoding="utf-8"?>
<Caches>
<Cache ID="beta-client" Version="95" />
<Cache ID="beta-server" Version="11" />
<Cache ID="beta-dlc2" Version="22" />
<Cache ID="beta-dlc3" Version="15" />
</Caches
Oh and make a file named key_public.xml
It should actually download the intel from the aiw servers and edit the key_public.xml file itself.