iOS 9.9.10.3.1 (build 14E6304) is an official Apple over-the-air update for the iPhone 6s, released on 2017-04-03T16:59:32Z. The update package is 1.71 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: 78761862bebfbecf959d65582dc978886d4701e9.zip.