iOS 9.9.12.1.3 (build 16D5032a) is an official Apple over-the-air update for the iPhone 6s, released on 2018-12-19T18:07:06Z. The update package is 2.15 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: 10c8c16967fc22bd1cf06834f76a030dce241109.zip.