iPadOS 12.4 (build 16G5027i) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2019-05-20T17:06:38Z. The update package is 49.27 MB. This is a delta (partial) update that requires 12.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: d36b52e120afb834ec1c3662cc4ae652ba49ca24.zip.