iPadOS 15.7 (build 19H12) is an official Apple over-the-air update for the iPad Air 3 (WiFi), released on 2022-10-24T18:37:53Z. The update package is 2.51 GB. This is a delta (partial) update that requires 14.8 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 5add8a3566370e132855a4621a228bc50bd2013a.zip.