iOS 11.4.1 (build 15G5077a) is an official Apple over-the-air update for the iPhone 6s, released on 2018-07-02T17:05:52Z. The update package is 29.49 MB. 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: 6dff9b7957384629dac13d800f4f5063bd8fa31c.zip.