iOS 11.2.5 (build 15D60) is an official Apple over-the-air update for the iPhone 6s, released on 2018-01-23T18:30:54Z. The update package is 155.64 MB. This is a delta (partial) update that requires 11.2.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: cba27999a2c1b896e5670e79a9833d4a8d906ac2.zip.