iOS 12.0 (build 16A366) is an official Apple over-the-air update for the iPhone 6s, released on 2018-09-12T19:11:18Z. The update package is 1.73 GB. This is a delta (partial) update that requires 10.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 80a43617adf443dd2e3f21aa096c368d9be31d40.zip.