iPadOS 11.4.1 (build 15G77) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2018-07-09T17:07:49Z. The update package is 708.27 MB. This is a delta (partial) update that requires 11.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 0c2c76c29b13cc523069196185e5eba495eddd34.zip.