Originally Posted by justtom
Okay so I accidentally found out how you can get your boost logo background back.Download yourself a live wallpaper from the store and set it as a wallpaper then open up your home-screen,now go into settings and delete the new wallpaper your phone will auto restore back to the boost logo.
I would assume there is a more simple way but like I said I accidentally discovered this after installing and then deleting a live-wallpaper I did not like. I tried it a few times just too be sure before I posted up for you,and it returns to the default wallpaper every time.
This way iram if you ever need it back