iPadOS 12.4 (build 16G5077a) is an official Apple over-the-air update for the iPad mini 3 (China), released on 2019-07-16T17:39:01Z. The update package is 140.79 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: 33f9bac031658fcfd0632d07568636cbd0c3c095.zip.