iPadOS 15.7.4 (build 19H321) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2023-03-27T17:11:38Z. The update package is 2.91 GB. This is a delta (partial) update that requires 13.7 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1e1e3e072e8bb3f59526c0a194623495c4360969.zip.