iOS 12.1 (build 16B92) is an official Apple over-the-air update for the iPhone 7 (Global), released on 2018-10-30T17:17:33Z. 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: 990c97d46a3a177f366505327f818f81cb71a019.zip.