iOS 9.3.2 (build 13F69) is an official Apple over-the-air update for the iPhone 6s, released on 2016-05-16T16:49:27Z. The update package is 382.12 MB. This is a delta (partial) update that requires 9.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a03bff4c12f67705fe50937ae6bde5261464f1d6.zip.