iPadOS 12.3 (build 16F5156a) is an official Apple over-the-air update for the iPad Air 3 (Cellular), released on 2019-05-10T17:08:14Z. The update package is 71.79 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: 4a71a3022554f2f3cb24cb7bb97d236610d8c6ba.zip.