Things You'll Need
Instructions
Plug your migration kit cable into the USB port on your XBox 360. Hook the cord up to the migration kit. Turn on your computer. Take the second cord on the migration kit and plug it into your computer's USB port.
Turn on your XBox 360 and scroll until you find the "My XBox" section. Scroll all the way to the right and select "System Settings" and "Memory." Select "Hard Drive" from the Memory list.
Select the "Games" option at the top of the memory menu. Find the saved game you want to modify and select "Copy." Back out of the "Hard Drive" menu and scroll down to the "External Hard Drive" option. Select "Paste" to paste your saved game.
Select a modding tool from the "My XBox Saves" website and download it to your computer. Pick a tool that is specific to the game you are modding. Don't mod a game if it doesn't have an available modding tool.
Open your modding tool on your computer. Select "Open File" and select your saved game file. Change your saved file using the mod tools. Select "File" and save the game file from the mod tool.
Select your saved file and click "Copy." Select "External Hard Drive" from the available drives and paste your game file.