iOS 11.2.2 (build 15C202) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2018-01-08T18:16:50Z. The update package is 1.09 GB. This is a delta (partial) update that requires 10.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: aa2474575646f037199bfd268320efd6669d802c.zip.