iOS 12.1 (build 16B5077c) is an official Apple over-the-air update for the iPhone 8 (Global), released on 2018-10-09T17:05:39Z. The update package is 567.68 MB. This is a delta (partial) update that requires 12.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 5c6e35bbca9201295a585b2e4b8f2233ea54a0f3.zip.