iOS 11.2.6 (build 15D100) is an official Apple over-the-air update for the iPhone X (GSM), released on 2018-02-19T21:13:38Z. The update package is 543.9 MB. This is a delta (partial) update that requires 11.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 80978912251a371741e9b6e70372b4f31ba35100.zip.