iOS 9.9.11.4 (build 15F79) is an official Apple over-the-air update for the iPhone 6s+, released on 2018-05-29T17:16:33Z. The update package is 1.62 GB. This is a delta (partial) update that requires 9.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4ff4b446dd0ff5daec9279c60adedd9078ab9480.zip.