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 1.12 GB. This is a delta (partial) update that requires 15.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2c55fbf78ece45d9d8b91aac4d0d0a0d4826cc17.zip.