iPadOS 15.7.4 (build 19H321) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2023-03-27T17:11:49Z. The update package is 680.41 MB. This is a delta (partial) update that requires 15.6 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: d2c3c6038e485ae00899ccd3a628b0eceecbe74d.zip.