Latest Xiaomi Redmi Smart Fire TV 4K user agents:

User Agent	Browser	Platform
Mozilla/5.0 (Linux; Android 9; AFTBTX4 Build/PS7706.5106N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.168 Mobile Safari/537.36	Chrome Webview 138	Fire OS 7