iPadOS 11.3 (build 15E5201e) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2018-03-05T18:13:54Z. The update package is 283.2 MB. This is a delta (partial) update that requires 11.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c0e5af4a6ad4071479fd2a5d5765150fea4de65c.zip.