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 382.18 MB. This is a delta (partial) update that requires 9.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 09db20b37298e7a763cbf972e5030b5db9282d1e.zip.