iOS 9.3.3 (build 13G12) is an official Apple over-the-air update for the iPhone 6s, released on 2016-05-23T16:47:36Z. The update package is 1.45 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: a61aa5e15c7cbb876c14e82279e8361cce21fe02.zip.