iOS 9.3.3 (build 13G34) is an official Apple over-the-air update for the iPhone 6s+, released on 2016-07-18T17:55:33Z. The update package is 314.5 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: eb3ea2eac9bff4b595b6bbe829169f61a7da16fd.zip.