Apple TV has separate settings for app updates and system software. A player being current does not prove that tvOS is current, and the reverse is also true.
Before changing an update preference, note the actual player version and why the change is needed. This makes a later support report more useful than saying the television is “fully updated.”
Find the app-update preference
Apple’s current guide places Automatically Update Apps under Settings → Apps. Review the existing state and choose the preference appropriate for the account holder. If automatic updates are off, Apple documents checking the app’s App Store page for a manual update.
Do not confuse this with automatically installing a tvOS edition after obtaining a related app on an iPhone or iPad. That is a different convenience. It applies only where an Apple TV version exists and the relevant account arrangement matches.
Verify the installed release
When an update is offered, let its installation finish before opening the player. Read the installed version from the app or its information after completion. Keep a note of the version that exhibited the original issue and the version used for the new check.
If no update appears, report that fact. Another device may be on a different rollout or edition. Avoid downloading a desktop, iPhone or unofficial package to force a version number onto Apple TV. The genuine tvOS listing defines the supported store route.
An update can change screens or features. Use the player developer’s notes where available, and avoid claiming that an unchanged old screenshot is evidence of the current interface.
Keep tvOS maintenance separate
System software updates are managed through Apple TV’s System and Software Updates controls. If the developer identifies a tvOS requirement, review that requirement and Apple’s current preparation instructions. Keep the box powered while a system update is in progress.
After the app update, repeat one specific action that previously failed. Record whether it changed. A successful update is not a hardware or account compatibility certification, and no IPTV USA service test is implied by this settings review.
Useful answers
Does Automatically Update Apps update tvOS?
No. App updates and Apple TV system software updates are separate settings.
Will an iPhone app always install on Apple TV too?
Only where a supported Apple TV version and the relevant automatic-installation/account conditions exist.