iPadOS 13.4 (build 17E5255a) is an official Apple over-the-air update for the iPad mini 5 (Cellular), released on 2020-03-10T17:20:49Z. The update package is 819.61 MB. This is a delta (partial) update that requires 13.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 74fa0a8c1d817995f8a7caa78dd2ed9824510b2c.zip.