iPadOS 15.7.3 (build 19H307) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2023-01-23T18:47:49Z. The update package is 1.12 GB. This is a delta (partial) update that requires 15.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 583fd49f1f213d825afbef407cfe661ec3dbe8a6.zip.