iOS 9.3.4 (build 13G35) is an official Apple over-the-air update for the iPhone 6s, released on 2016-08-04T17:08:28Z. The update package is 312.95 MB. This is a delta (partial) update that requires 9.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 92458e436c75b06a6cbe0cc73d55423a7d7670e9.zip.