iOS 12.4 (build 16G5056d) is an official Apple over-the-air update for the iPhone XS, released on 2019-06-24T17:17:24Z. The update package is 348.52 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: 282310ebc96b3c7ff15fb19cd35fdb99aa9638b5.zip.