I typically keep my background sync off to avoid un-necessary updates on my Sprint Samsung Galaxy S2. I currently have the stock OS on it (Gingerbread I think). Yesterday to download a new app from the play store I had to turn back on background sync. While looking around the phone automatically downloaded the ICS update (4.0.4). Now I keep getting a notification "Android System Update downloaded and verified." I can only select "Install Now" or "Install Later." Even when I pick "Install Later" it prompts me every 15 min or so to update. How do I cancel this update? I've heard horrible things about the ICS update and don't want to mess up my phone. Any help would be greatly appreciated! Thanks!