iOS 8.0 (build 12A4345d) is an official Apple over-the-air update for the iPhone 5 (GSM), released on 2014-08-04T18:14:04Z. The update package is 224.21 MB. This is a delta (partial) update that requires 8.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3853a5aa311ef9bab8e1dd8aa3f22e58f2f38953.zip.