iOS 12.1 (build 16B5077c) is an official Apple over-the-air update for the iPhone 7 (GSM), released on 2018-10-09T17:06:10Z. The update package is 549.85 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: dc6960433aa384a49e09d9df0b7afe389cf60dc4.zip.