iOS 12.1.3 (build 16D5039a) is an official Apple over-the-air update for the iPhone X (Global), released on 2019-01-10T18:08:55Z. The update package is 58.54 MB. This is a delta (partial) update that requires 12.1.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: ed325b047f9d99deeb0576cea05be54e5c2c026b.zip.