iOS 9.9.11.2.5 (build 15D60) is an official Apple over-the-air update for the iPhone 6, released on 2018-01-23T18:30:28Z. The update package is 1.29 GB. This is a delta (partial) update that requires 9.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: d589614eca2ad64c0036d1da1701a47018702793.zip.