iOS 11.2.2 (build 15C202) is an official Apple over-the-air update for the iPhone X (GSM), released on 2018-01-08T18:16:26Z. The update package is 414.26 MB. This is a delta (partial) update that requires 11.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3b94baaf6e86e0f4568dad7d639fa064285f3d92.zip.