iPadOS 11.3 (build 15E5216a) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2018-03-16T17:05:05Z. The update package is 52.25 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: 2c8a180a57e44e35b49938e1abd8fc074a2908ee.zip.