iOS 12.4 (build 16G5069a) is an official Apple over-the-air update for the iPhone XS, released on 2019-07-09T17:16:20Z. The update package is 135.22 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: dc05698fb62acd63b1ebdd7d48147172b6d20422.zip.