tvOS 11.1 (build 15J5559d) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2017-09-28T16:57:57Z. The update package is 1.14 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 86713e4379781f4a1e2f798b8d3fd2049d96d977.zip.