iOS 7.0.3 (build 11B511) is an official Apple over-the-air update for the iPhone 4s, released on 2013-10-22T19:58:59Z. The update package is 1.17 GB. This is a delta (partial) update that requires 6.1.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3bd52c9b347853f2b4a329c127039acb70f1276d.zip.