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 413.04 MB. This is a delta (partial) update that requires 12.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 95fb789b86e6901268239fd59b31526913042067.zip.