iOS 8.0 (build 12A4297e) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2014-06-17T18:45:06Z. The update package is 359.01 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: c550c1c7f39ddde922f9f2d95d996b3c35f39911.zip.