tvOS 11.4.1 (build 15M73) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2018-07-09T17:13:35Z. The update package is 959.23 MB. This is a delta (partial) update that requires 9.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9c0ad884dc3d84b04476ed978f1b3c1d4471400f.zip.