iPadOS 15.7.1 (build 19H117) is an official Apple over-the-air update for the iPad Air 4 (Cellular), released on 2022-10-27T17:35:19Z. The update package is 2.62 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: 1e5bcb8abf0b636341021ff5df89aecd81934748.zip.