iOS 11.0.3 (build 15A432) is an official Apple over-the-air update for the iPhone 6s+, released on 2017-10-11T17:08:09Z. The update package is 1.16 GB. This is a delta (partial) update that requires 10.3.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 6138e11f22147142ca2ffde5bdf15e20064f23e7.zip.