On your Xbox 360, go to Settings > System > Storage . Find the profile or game save you want to mod and choose Move or Copy to your USB drive.
Download the software from a trusted source like WeMod . How to Use Horizon horizon xbox 360 instruktsiia
Works on both retail and RGH/JTAG consoles, as it primarily modifies save data rather than the console's firmware. How to Transfer & Resign Xbox 360 Game Saves On your Xbox 360, go to Settings > System > Storage
Instantly unlock achievements for various games. How to Use Horizon Works on both retail
Plug your USB drive into your PC and launch the Horizon app. The Device Explorer should appear on the right side of the interface, showing your USB contents.
Safely remove the USB from your PC, plug it back into your Xbox 360, and move the modded file back to your console's hard drive or play directly from the USB. Key Features