iPadOS 12.4 (build 16G5056d) is an official Apple over-the-air update for the iPad mini 2 (China), released on 2019-06-24T17:16:51Z. The update package is 188.22 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: 519b796bfeaaa15ba27a3f56b566758b2f20db59.zip.