iOS 7.1 (build 11D5134c) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2014-01-20T17:59:26Z. The update package is 112.27 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: c9be99bdecb797248e94a9208473ba0a64a5401d.zip.