iOS 9.9.12.1 (build 16B5068i) is an official Apple over-the-air update for the iPhone 6s, released on 2018-10-02T17:12:05Z. The update package is 2.14 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: 24c3e948d49806121b47deb7e57e3cd9cbfefd36.zip.