iOS 9.3.5 (build 13G36) is an official Apple over-the-air update for the iPhone 6s, released on 2016-08-25T16:53:04Z. 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: 26a89c96355a8193e06914803618e9fe07c0c8b0.zip.