iOS 12.4 (build 16G5027i) is an official Apple over-the-air update for the iPhone 6+, released on 2019-05-20T17:07:23Z. The update package is 209.78 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: 3a0da39b447c2fb7bf8255fc20bbe8fb4c3d886e.zip.