iPadOS 9.9.10.2 (build 14C92) is an official Apple over-the-air update for the iPad 4 (WiFi), released on 2016-12-12T17:57:19Z. The update package is 881.27 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: 78474862a6f5b2cbe8099d1b284cd8357657dbc3.zip.