iPadOS 12.4 (build 16G5056d) is an official Apple over-the-air update for the iPad mini 5 (WiFi), released on 2019-06-24T17:16:44Z. The update package is 213.76 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: 8be71be5f112a4aaf5fea71fa7c85c0803a1e82c.zip.