iPadOS 15.7.3 (build 19H307) is an official Apple over-the-air update for the iPad mini 4 (Cellular), released on 2023-01-23T18:47:52Z. The update package is 2.2 GB. This is a delta (partial) update that requires 14.6 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: de39d6189e2c7f1fa68a6a9f80264e2a07994ff8.zip.