iPadOS 11.3 (build 15E216) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2018-03-29T17:08:23Z. The update package is 615.21 MB. This is a delta (partial) update that requires 11.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1019c218f71eee46e6015752da75f8a26bdead74.zip.