tvOS 11.4.1 (build 15M5063a) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2018-06-12T17:07:17Z. The update package is 53.93 MB. This is a delta (partial) update that requires 11.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: bd0d879502a4470f291ce24e62deacab94ff173a.zip.