iOS 12.4 (build 16G5077a) is an official Apple over-the-air update for the iPhone XS Max, released on 2019-07-16T17:39:34Z. The update package is 343.67 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: faa7f6d2aeef1a8b98b5adbc25f718e92a21bfd8.zip.