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 1.45 GB. This is a delta (partial) update that requires 11.2.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 5a827c366b9fc69b7b97bf494dfab3d42e86befb.zip.