iPadOS 11.4.1 (build 15G77) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2018-07-09T17:07:55Z. The update package is 1.24 GB. This is a delta (partial) update that requires 10.3.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f2af1f7306efa3365368cf13597d22eed9db02fa.zip.