iOS 12.1 (build 16B5077c) is an official Apple over-the-air update for the iPhone 7 Plus (GSM), released on 2018-10-09T17:06:11Z. The update package is 565.18 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: 274d4adf627279d8096e1a3b104365c2e9a52e8e.zip.