iOS 12.4 (build 16G5027i) is an official Apple over-the-air update for the iPhone XS, released on 2019-05-20T17:07:16Z. The update package is 276.15 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: 6985bcc96594e24061c9eeb2f358946bf91a24f5.zip.