iOS 7.1 (build 11D5134c) is an official Apple over-the-air update for the iPhone 4s, released on 2014-01-20T17:59:28Z. The update package is 62.19 MB. This is a delta (partial) update that requires 7.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 04657807cee130366f84964fea74d8cdd85fd436.zip.