What you need. Halo 3 ODST. Starter Save. Configured USB Device. Step 1. Open up 360Revolution. Spoiler Step 2. Open up Gamesave Mod Tools and Scroll down to Halo 3 ODST, Then Click to open. Spoiler Step 3. Click on File and open your Save from the Desktop (Your extracting point). Spoiler Step 4. Now you have several modding options which is Weapon Clip & Ammo, Frags, Plasmas and Invincibility, Enter what you want Modded and click Invincibility. Spoiler Step 5. Now save your work and 360Revolution will Auto Rehash and Resign your Save. Spoiler Step 6. Inject your Save back on to your USB Device, Load up your Game and Enjoy.