iPadOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPad 5 (Cellular), released on 2018-12-05T18:08:38Z. The update package is 1.33 GB. This is a delta (partial) update that requires 11.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3b0b87d724bcde5bc73f378bb5c774ba7df86107.zip.