iOS 10.3.3 (build 14G5057a) is an official Apple over-the-air update for the iPhone 6s, released on 2017-06-28T16:53:05Z. The update package is 55.66 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: 420fa85edfed4f46deaee549c7a3fe7a850250df.zip.