iOS 12.1.2 (build 16C101) is an official Apple over-the-air update for the iPhone 5s (Global), released on 2018-12-17T21:06:33Z. The update package is 1.35 GB. 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: ae8079b177bc410970676e301cc7e14e4aa9c2b9.zip.