iOS 12.1 (build 16B92) is an official Apple over-the-air update for the iPhone XS, released on 2018-10-30T17:16:14Z. The update package is 456.25 MB. This is a delta (partial) update that requires 12.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: ce998097d81b3d9b359ac21f25f3324f4e6dd1e2.zip.