(adsbygoogle = window.adsbygoogle || []).push({}); I recently made myself prestige 11 but it is messing up with me finding games so I want to go back to pretige 10. Is there any way to go back to pretige 10???

You can only do the prestige hack if you bypass, you need to debug the .self file in the patch. Here's a tutorial. You must login or register to view this content.

Go to game utility and remove MW2 game save..
Then boot up mw2 and install 1.11.
I think you lost your default_mp....

And if i get the default.mp i will go to prestige 10?

No, still 11th.
But it'll not mess up your match making system...