iPadOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPad 5 (Cellular), released on 2018-12-05T18:08:39Z. The update package is 1.29 GB. This is a delta (partial) update that requires 11.2.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 7be58be0a7fa89de148e567e97dcfe35d12c7259.zip.