iPadOS 11.3 (build 15E216) is an official Apple over-the-air update for the iPad mini 3 (WiFi), released on 2018-03-29T17:06:57Z. The update package is 704.76 MB. This is a delta (partial) update that requires 11.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 297c735f7502bf055149484368d9211edce898eb.zip.