iOS 9.9.11.4.1 (build 15G5063b) is an official Apple over-the-air update for the iPhone 6s, released on 2018-06-11T17:21:59Z. 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: a141f10b53a14709750958e47bafe9cde1806b6b.zip.