iOS 12.1.3 (build 16D39) is an official Apple over-the-air update for the iPhone 7 (Global), released on 2019-01-22T18:13:21Z. The update package is 505.92 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: 17046101196a2e37dcdafc1f599d726f2c7e8fc6.zip.