iOS 9.9.11.4 (build 15F6079) is an official Apple over-the-air update for the iPhone 6s, released on 2018-05-29T17:12:24Z. The update package is 1.85 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 69264dd15cfe1d5c548109e0911bbb90e2777ad2.zip.