iOS 7.1 (build 11D167) is an official Apple over-the-air update for the iPhone 4s, released on 2014-03-10T16:58:42Z. The update package is 1.2 GB. This is a delta (partial) update that requires 6.1.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3c691d31ddd6a465253700888e1a14e355f3ddc3.zip.