iOS 9.9.11.1 (build 15B5086a) is an official Apple over-the-air update for the iPhone 6s, released on 2017-10-16T17:04:19Z. The update package is 1.82 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: b9db2b8655f43693986387805e1b206aa9caac54.zip.