iPadOS 15.7.3 (build 19H307) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2023-01-23T18:48:00Z. The update package is 2.2 GB. This is a delta (partial) update that requires 14.6 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c0147a349e5c752b0be4cf9c8882e80d72742031.zip.