iOS 11.1 (build 15B93) is an official Apple over-the-air update for the iPhone 5s (Global), released on 2017-10-23T17:06:48Z. The update package is 234.66 MB. This is a delta (partial) update that requires 11.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2cb1309749d3d95c63310aa1235bc1cd31b57488.zip.