I did what you say in the video, but after I have done this al I still am level 70 prestige 10.
U know an idea?
im not iJustHelp but im gonna try to help you to.
this is the way of how to reset your rank, after that you can hack to the lv you want or play without hacks.
this will reset everything (titles emblems rank barracks etc.)
this is copied and pasted from my tutorial
Do this when MW2 is NOT launched.
1. Go to:
and delete all .STAT files.
2. Then go to:
C/Program Files/Steam/Userdata/Some numbered folder/Some numbered folder/Remote
And delete the 2 files there
3. Then launch MW2 and play till you are lv.2 so it saves and you are done!