iPadOS 11.4.1 (build 15G77) is an official Apple over-the-air update for the iPad Air (WiFi), released on 2018-07-09T17:06:47Z. The update package is 678.34 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: 81d4a961ea9536d52ebb160db5ab8ea61497189e.zip.