iOS 12.4 (build 16G5069a) is an official Apple over-the-air update for the iPhone 8 (Global), released on 2019-07-09T17:16:16Z. The update package is 124.78 MB. This is a delta (partial) update that requires 12.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 51777eafa3e16c483f916e719897d55637f1eded.zip.