iOS 12.1.2 (build 16C101) is an official Apple over-the-air update for the iPhone 7 (Global), released on 2018-12-17T21:07:29Z. The update package is 499.17 MB. This is a delta (partial) update that requires 12.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 10b7731cc2399fbc32a938dc6075d69e7bdda910.zip.