iOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPhone 7 (Global), released on 2018-12-05T18:11:22Z. The update package is 1.42 GB. This is a delta (partial) update that requires 11.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: abc98b37f1360fe74022ea2b17ec8214b352264d.zip.