iOS 9.9.12.1.2 (build 16C6101) is an official Apple over-the-air update for the iPhone 6s, released on 2018-12-17T21:05:24Z. 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: db4e3620762206c3ffcb6fe60ce73c1eb9129224.zip.