tvOS 12.4 (build 16M5537c) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2019-05-28T17:11:46Z. The update package is 81.95 MB. This is a delta (partial) update that requires 12.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: cff9bd68eab7f20d6632a235223120b70d45c7ec.zip.