iPadOS 11.3 (build 15E5216a) is an official Apple over-the-air update for the iPad mini 3 (WiFi), released on 2018-03-16T17:05:03Z. The update package is 51.63 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: 411f96a4e0abc3f1c7a19f1fb965f93baa1a7bdc.zip.