iPadOS 15.7.5 (build 19H332) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2023-04-10T17:10:54Z. The update package is 2.23 GB. This is a delta (partial) update that requires 14.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 65bee1070ba7cbf43712b466269f41c8bf458313.zip.