iOS 11.2.5 (build 15D5049a) is an official Apple over-the-air update for the iPhone 6s+, released on 2018-01-03T18:16:28Z. The update package is 113.88 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: 2beda2be7e3169d0840fc4e4724aa28ffb3eaf87.zip.