iPadOS 10.2.1 (build 14D23) is an official Apple over-the-air update for the iPad 4 (WiFi), released on 2017-01-09T17:55:44Z. The update package is 31.72 MB. This is a delta (partial) update that requires 10.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c551d40bb37ccd3b78113dd2866cd552d9cb1641.zip.