iPadOS 12.4 (build 16G5056d) is an official Apple over-the-air update for the iPad mini 5 (Cellular), released on 2019-06-24T17:16:45Z. The update package is 218.02 MB. This is a delta (partial) update that requires 12.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: bcc7d23403d6f7faa25cdb3de23c9aec9c8cd03f.zip.