iPadOS 11.3 (build 15E216) is an official Apple over-the-air update for the iPad mini 3 (WiFi), released on 2018-03-29T17:06:45Z. The update package is 1.23 GB. This is a delta (partial) update that requires 10.3.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 458b0fc39d39377f70620f4d7a195981fa654d5b.zip.