iOS 7.0 (build 11A4449d) is an official Apple over-the-air update for the iPhone 4s. The update package is 125 MB. This is a delta (partial) update that requires 7.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 33cd1afeac1744846b287947e701732a560f2bcb.zip.