iOS 10.3.2 (build 14F89) is an official Apple over-the-air update for the iPhone 6s, released on 2017-05-15T17:02:48Z. The update package is 763.05 MB. This is a delta (partial) update that requires 10.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 5f059dc9038f6f541029b9755aefa4ac7bb85f5d.zip.