iPadOS 11.4 (build 15F79) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2018-05-29T17:14:28Z. The update package is 1.27 GB. This is a delta (partial) update that requires 10.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4e991eee98b4c62708b0665a409ac04d2b30f773.zip.