iOS 13.1 (build 17A5837a) is an official Apple over-the-air update for the iPhone X (Global), released on 2019-09-10T20:21:53Z. The update package is 258.17 MB. This is a delta (partial) update that requires 13.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 54f485876432bd042ec8b803e6a3ded7492876a7.zip.