iOS 11.1.2 (build 15B202) is an official Apple over-the-air update for the iPhone 5s (Global), released on 2017-11-16T21:21:01Z. The update package is 234.5 MB. This is a delta (partial) update that requires 11.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1efa11bbefea3bc7c3bd16a639510c2f1981d016.zip.