iPadOS 11.4.1 (build 15G77) is an official Apple over-the-air update for the iPad 6 (WiFi), released on 2018-07-09T17:09:10Z. The update package is 280.37 MB. This is a delta (partial) update that requires 11.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3b0796be3149cce4b5bf65e82fe5d7e7c1121d55.zip.