There are endless blogposts and debates on when and whether and how to update iOS 7 when it becomes available today, expected around 1 p,m. Eastern time. Here are some steps suggested by Mike Reed, a solutions engineer who works with enterprise customers for MobileIron, a mobile device management vendor. 1. Update all your iOS apps first.Even if you don't see a badge on the app store, check it. Some users report seeing a growing flood of app updates starting Tuesday.