iOS 11.1 (build 15B93) is an official Apple over-the-air update for the iPhone 5s (Global), released on 2017-10-23T17:06:49Z. The update package is 30.44 MB. This is a delta (partial) update that requires 11.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 86f99456f4630f4c3709da3c3fb6fa0f23d99a2a.zip.