With this mpdata editor you can give yourself 10th Prestige in the offline multiplayer ( system link or split screen ) of Modern Warfare 2.
How this works :
1. Get 1 kill in system link or split screen .
2. Get the multiplayer progress of your xbox 360 hdd .
3. Copy the mpdata from the multiplayer progress to your desktop .
4. Open the mpdata with the mpdata editor & change everything you want.
5. Press save in the mpdata editor and rehash & resign the mpdata .
6. Replace the mpdata with the one on your desktop .
7. Start MW2 and start a system link or split screen multiplayer match . You should see the changes . Enjoy .
Don't try this online !!! You will get banned for this .
This is only for offline multiplayer .