iPadOS 11.4.1 (build 15G5054c) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2018-05-30T17:04:49Z. The update package is 211.63 MB. This is a delta (partial) update that requires 11.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 13b3e70decf011d0d61bf7425cd1dbc1444c580b.zip.