iPadOS 10.3.1 (build 14E304) is an official Apple over-the-air update for the iPad 4 (GSM), released on 2017-04-03T16:59:43Z. The update package is 18.17 MB. This is a delta (partial) update that requires 10.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: fcb576d4807749c0e25af261c4cb48ca3d1feb0d.zip.