iPadOS 9.9.10.2.1 (build 14D27) is an official Apple over-the-air update for the iPad 4 (Global), released on 2017-01-23T18:07:18Z. The update package is 878.12 MB. This is a delta (partial) update that requires 9.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c56d73a0e2e30d30fd9599aa39b19e4bc9ab15b9.zip.