iOS 12.4 (build 16G5046d) is an official Apple over-the-air update for the iPhone 6, released on 2019-06-11T17:07:43Z. The update package is 237.31 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: cf1487aef1808f0b6af3d860e4d4bbe0f302c6a8.zip.