iOS 12.0 (build 16A5339e) is an official Apple over-the-air update for the iPhone 6s, released on 2018-07-30T17:09:35Z. The update package is 1.19 GB. This is a delta (partial) update that requires 11.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 27617b6de9bc5377d4b7180e00855562d0468d94.zip.