iOS 9.9.11.1 (build 15B6092) is an official Apple over-the-air update for the iPhone 6s+, released on 2017-10-20T17:04:56Z. The update package is 1.96 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: 293612ca6b473b12f95c5cddfd4decf8743bfbfe.zip.