iOS 12.1.1 (build 16C5050a) is an official Apple over-the-air update for the iPhone 5s (Global), released on 2018-11-15T18:04:56Z. The update package is 289.68 MB. This is a delta (partial) update that requires 12.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: b18c6893d1a62791cb523e47f93113fff79739e6.zip.