iPadOS 12.4 (build 16G5077a) is an official Apple over-the-air update for the iPad 5 (Cellular), released on 2019-07-16T17:39:06Z. The update package is 290.9 MB. This is a delta (partial) update that requires 12.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: d9409ebdbcc9df626fafa5537ab114a632a0b585.zip.