iOS 12.3 (build 16F5155a) is an official Apple over-the-air update for the iPhone 7 Plus (Global), released on 2019-05-07T17:04:34Z. The update package is 68.46 MB. This is a delta (partial) update that requires 12.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 427b77850b01499d32a34c0805834c64e1f5eca6.zip.