iPadOS 9.9.10.2.1 (build 14D27) is an official Apple over-the-air update for the iPad 4 (WiFi), released on 2017-01-23T18:07:12Z. The update package is 1.15 GB. This is a delta (partial) update that requires 8.1.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: df3af3a8a85b4ae2688874e60f64ee66113cf9b7.zip.