iPadOS 11.2.6 (build 15D100) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2018-02-19T21:11:53Z. The update package is 155 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: 7394a016505fd824188ecc07bbfb91f9293894ee.zip.