iOS 12.1.1 (build 16C5043b) is an official Apple over-the-air update for the iPhone X (GSM), released on 2018-11-07T21:08:57Z. The update package is 372.91 MB. This is a delta (partial) update that requires 12.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 97831c1d1373e815144083b51f2bd1a1e5e62e5a.zip.