iOS 12.3 (build 16F5129d) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2019-04-08T17:04:58Z. The update package is 445.36 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: f465b2b9b6929ee63398e00af021c2777826e6e7.zip.