iOS 9.9.11.2.5 (build 15D5046b) is an official Apple over-the-air update for the iPhone 6s, released on 2017-12-19T18:03:11Z. The update package is 1.77 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: 363b1d2e05bb29aca8e3b6055e4ee7b8b1c665cd.zip.