iOS 10.3.3 (build 14G5053a) is an official Apple over-the-air update for the iPhone 6s+, released on 2017-06-22T17:24:59Z. The update package is 109.56 MB. This is a delta (partial) update that requires 10.3.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 642eb1216e06e13737a56faed48bc9d63d888465.zip.