iPadOS 9.9.11.2.1 (build 15C153) is an official Apple over-the-air update for the iPad mini 3 (China), released on 2017-12-13T18:06:42Z. The update package is 1.48 GB. This is a delta (partial) update that requires 8.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f850ccc2eb5514e573f345f7ee54d3b543d732bb.zip.