iOS 9.9.11.4 (build 15F79) is an official Apple over-the-air update for the iPhone 6, released on 2018-05-29T17:16:14Z. The update package is 1.48 GB. This is a delta (partial) update that requires 9.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3be6276cd48416b9b94eba0ea103adff676b3cf0.zip.