iPadOS 12.4 (build 16G5056d) is an official Apple over-the-air update for the iPad mini 3 (WiFi), released on 2019-06-24T17:16:52Z. The update package is 190.14 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: f16e23ab65cdeae9816551e4aa287969beda8b57.zip.