iPadOS 15.7.4 (build 19H321) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2023-03-27T17:11:46Z. The update package is 1.34 GB. This is a delta (partial) update that requires 15.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9208755634c5424526a66b7dc12605c79ef6a9a6.zip.