iPadOS 12.0 (build 16A5318d) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2018-07-03T17:05:13Z. The update package is 1.09 GB. This is a delta (partial) update that requires 11.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 0c55345369a1e5161a4363791836677e8c273a80.zip.