iPadOS 10.2.1 (build 14D27) is an official Apple over-the-air update for the iPad 4 (GSM), released on 2017-01-23T18:07:16Z. The update package is 838.27 MB. This is a delta (partial) update that requires 9.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f94ee0ce5806a853c6ee206a2defadbba5bb4d32.zip.