iPadOS 15.7.4 (build 19H321) is an official Apple over-the-air update for the iPad mini 4 (Cellular), released on 2023-03-27T17:11:41Z. The update package is 2.39 GB. This is a delta (partial) update that requires 14.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2bc416a0993850d460adb682c0df2480f9c465be.zip.