iOS 7.1 (build 11D5127c) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2014-01-07T17:54:15Z. The update package is 116.88 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: b2cae1c55466d7370520d88ef0121d4119415891.zip.