iPadOS 9.9.10.2.1 (build 14D5027) is an official Apple over-the-air update for the iPad 4 (GSM), released on 2017-01-12T21:11:37Z. The update package is 1.34 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: d5c320eb2f05e7a402ebddcaf16d09abd2d598a6.zip.