Alright, a lot of people asked this and it is possible but ONLY for touches LOWER then 3.0. DO NOT WASTE YOUR TIME if you have 3.0. 1. Enter Cydia 2. Manage, Sources, edit, add, 3. Add repo.halo4iphone.com 4. add. 5. Go to changes..and scroll down to ihalo beta campaign. 6. Install that. 7. There you have it.