iOS 12.4 (build 16G5038d) is an official Apple over-the-air update for the iPhone X (GSM), released on 2019-05-28T17:07:39Z. The update package is 259.39 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: dcfc15e814aad1ccd0767e0a23d303fa723b635b.zip.