iPadOS 12.3 (build 16F5155a) is an official Apple over-the-air update for the iPad 6 (Cellular), released on 2019-05-07T17:04:00Z. The update package is 80.94 MB. This is a delta (partial) update that requires 12.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 0593e1f5af73607963b7929a96d9ed8f06a719fe.zip.