iPadOS 12.4 (build 16G5027i) is an official Apple over-the-air update for the iPad mini 3 (China), released on 2019-05-20T17:06:44Z. The update package is 55.46 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: ef6fc70b44ad551edd10b3787b37c22acaba2007.zip.