Installing builds on tvos
app store
On your Apple TV, open the App Store app and search for TestFlight. Install the app on your device. You’ll have to sign in to the account where you have access to the apps you need to test.
testflight
Within Testflight, you’ll see the list of apps that you have available to test. Click on the app logo to view more details.
app testing options
Sometimes we do not want the most recent build (especially with some features being available in specific builds). To download a different build, click on “Previous Builds” within the app you need to test. From there you’ll be able to find the correct build and install via the “Install” CTA.