iPadOS 12.2 (build 16E5181f) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2019-01-24T18:05:34Z. The update package is 611.12 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: 86f8532e6770f88bc03e50b6aa8d1133fa437f4f.zip.