iPadOS 15.7.4 (build 19H321) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2023-03-27T17:11:48Z. The update package is 2.2 GB. This is a delta (partial) update that requires 14.5.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c324a78977296f4672739eee26bbcb1932d0b3fd.zip.