iPadOS 11.3 (build 15E216) is an official Apple over-the-air update for the iPad mini 4 (Cellular), released on 2018-03-29T17:09:00Z. The update package is 705.33 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: c731a54b7ca9a0c231e63f31578d8856b9d804f2.zip.