iPadOS 12.0 (build 16A5362a) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2018-08-20T17:04:57Z. The update package is 150.36 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: b95bde290a46aa499891f894b9d26c9d48ee7545.zip.