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 838.32 MB. This is a delta (partial) update that requires 9.3.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: ad5368eac324529623e14bc57d55ccbdad565746.zip.