iOS 12.4 (build 16G5027g) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2019-05-15T17:05:37Z. The update package is 233.24 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: f791dce87dca03c7e08a5c2dfcd02e7b52e039e8.zip.