iPadOS 11.4.1 (build 15G77) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2018-07-09T17:07:50Z. The update package is 244.76 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: dd3c858c91945ae4b634d2154f70907f29b1444c.zip.