iPadOS 9.9.10.2.1 (build 14D27) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2017-01-23T18:07:40Z. The update package is 1.09 GB. This is a delta (partial) update that requires 9.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e511c77cc5ac28495d5c8f84ac652b5c93e42989.zip.