iOS 9.9.13.1.3 (build 17A6878) is an official Apple over-the-air update for the iPhone 6s, released on 2019-10-15T17:06:54Z. The update package is 2.63 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: c1dc8f9e53ee199221f436c56493c57715bef2b3.zip.