iOS 11.2.5 (build 15D60) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2018-01-23T18:29:43Z. The update package is 155.85 MB. This is a delta (partial) update that requires 11.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 186552acfa5033ac8eb97704e7281785748bc13c.zip.