iOS 12.3 (build 16F5117h) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2019-03-27T17:06:19Z. The update package is 395.37 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: 6b6fa61eb0d20ea4355169ac8d6700a5d73b5813.zip.