iOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPhone 7 (GSM), released on 2018-12-05T18:11:48Z. The update package is 1.46 GB. This is a delta (partial) update that requires 11.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9944f133d36bac55c144990547afe5760dd0e00b.zip.