iPadOS 12.4 (build 16G5077a) is an official Apple over-the-air update for the iPad 5 (WiFi), released on 2019-07-16T17:39:05Z. The update package is 290.95 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: 32f485e4851e0b97758ee76a2c76a7a4b52e595b.zip.