iOS 11.2.5 (build 15D5049a) is an official Apple over-the-air update for the iPhone X (GSM), released on 2018-01-03T18:16:23Z. The update package is 125.22 MB. This is a delta (partial) update that requires 11.2.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 243818970de473ebf7358d49df0b1bce1a67ea06.zip.