tvOS 11.1 (build 15J5571d) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2017-10-09T20:00:17Z. The update package is 157.31 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: ce06c83ee96e83db6341b1e5f93e6d3cd4ae5a0d.zip.