iOS 12.3 (build 16F5155a) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2019-05-07T17:04:13Z. The update package is 88.73 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: a3dd68402a7dfddb2aa6998dbb166d7bad258a58.zip.