iOS 12.4 (build 16G5077a) is an official Apple over-the-air update for the iPhone XR, released on 2019-07-16T17:39:35Z. The update package is 340.97 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: a08a86a3e0831c12ccf45e076b072fc65736ef55.zip.