iPadOS 12.0 (build 16A5308e) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2018-06-19T17:04:16Z. The update package is 1.09 GB. This is a delta (partial) update that requires 11.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f34f5fd5f5c2b79e66d1e4465fdffa5c901b1ef4.zip.