iOS 9.9.14.3 (build 18C66) is an official Apple over-the-air update for the iPhone 6s, released on 2020-12-14T18:13:28Z. The update package is 3.32 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: 2bf7054c7b1220923e6096d1a087f835afd4055e.zip.