iPadOS 12.2 (build 16E5227a) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2019-03-18T17:06:29Z. The update package is 651.03 MB. This is a delta (partial) update that requires 12.1.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c5d0c64add0d79a5704ab0d00435dc510e1e340f.zip.