iPadOS 9.9.11.1 (build 15B6093) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2017-10-23T17:00:21Z. The update package is 1.71 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 604185d2113b106ff42d735b8c6d003a5768d0ce.zip.