iOS 12.3 (build 16F5117h) is an official Apple over-the-air update for the iPhone 7 Plus (GSM), released on 2019-03-27T17:06:33Z. The update package is 379.93 MB. This is a delta (partial) update that requires 12.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 6bb34d48b5913d949b4e152ba8dcc9091718f8ba.zip.