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 2.79 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: bcbf8b0a2d3e7b78810c95b0bb58d1280c04b5a9.zip.