iPadOS 12.3 (build 16F5139e) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2019-04-22T17:08:08Z. The update package is 370.79 MB. This is a delta (partial) update that requires 12.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 8ab021a1f8008bc5559cb0eb233ed999c461b5db.zip.