Why is 4K not working on my Apple TV?

Our NESN 360 app supports 4K on:

Apple TV HD (4th gen) Model A1625:

Previously Apple TV (4th generation)

• Model number: A1625
• Year introduced: 2015
• Color: Black
• Capacity: 32 GB or 64 GB
• HDMI 1.4 (720p or 1080p)
• 10/100BASE-T Ethernet
• Wi-Fi (802.11a/b/g/n/ac with MIMO)
• Bluetooth 4.0 wireless technology
• IR receiver
• USB‑C (for service and support)

Apple TV 4K (1st gen) 2017 Model A1842

• Model number: A1842
• Year introduced: 2017
• Color: Black
• Capacity: 32 GB or 64 GB
• HDMI 2.0a (2160p, Dolby Vision, and HDR10)
• Gigabit Ethernet
• 802.11ac Wi‑Fi with MIMO; simultaneous dual band (2.4GHz and 5GHz)
• Bluetooth 5.0 wireless technology
• IR receiver

Apple TV 4K (2nd gen) 2021 Model A2169-Supports 4KHDR

• Model number: A2169
• Year introduced: 2021
• Color: Black
• Capacity: 32 GB or 64 GB
• HDMI 2.1 (up to 4K60 HDR10 and Dolby Vision video output)
• Gigabit Ethernet
• 802.11ax Wi‑Fi 6 with MIMO; simultaneous dual band (2.4GHz and 5GHz)
• Bluetooth 5.0 wireless technology
• Thread
• IR receiver

See below to identify your Apple TV version and specifications: 

Identify your Apple TV model - Apple Support