iOS 9.9.10.3 (build 14E277) is an official Apple over-the-air update for the iPhone 6s+, released on 2017-03-27T16:58:18Z. The update package is 1.23 GB. This is a delta (partial) update that requires 9.3.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 6e0c3841bd8408dfc0b2b3824ce90a28ef2b665b.zip.