iPadOS 12.1 (build 16B5068i) is an official Apple over-the-air update for the iPad 5 (WiFi), released on 2018-10-02T17:11:43Z. The update package is 401 MB. This is a delta (partial) update that requires 12.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 633d29209f7d758fa3a54aba8bc26c6b587688fd.zip.