iPadOS 12.0 (build 16A5362a) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2018-08-20T17:04:56Z. The update package is 1.14 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: 4d235f8dfa75c1a4e812a010be7485d9886eeb8b.zip.