iPadOS 12.0 (build 16A366) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2018-09-12T19:04:59Z. The update package is 1.55 GB. This is a delta (partial) update that requires 10.3.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: ee6eb3ac4268795cf80a4002ed057d158716554a.zip.