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 2.25 GB. This is a delta (partial) update that requires 14.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: d5e3515a6c39ddf226bb49bacadb681461830890.zip.