iOS 9.9.10.3 (build 14E277) is an official Apple over-the-air update for the iPhone 6s, released on 2017-03-27T16:58:10Z. The update package is 1.26 GB. This is a delta (partial) update that requires 9.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4338956e52921a39f04066653c46ae5ae21d5fbd.zip.