iOS 12.1.3 (build 16D39) is an official Apple over-the-air update for the iPhone 7 Plus (Global), released on 2019-01-22T18:14:04Z. The update package is 268.13 MB. This is a delta (partial) update that requires 12.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a32491ee337e60ac8528885a1141e0eb1522f626.zip.