tvOS 11.1 (build 15J5580a) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2017-10-16T20:03:37Z. The update package is 41.42 MB. This is a delta (partial) update that requires 11.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: aaa1e24ab58af9730ca08881870bb0a3d783414a.zip.