Latest Amazon Fire TV Omni QLED (2023) user agents:

User Agent	Browser	Platform
Mozilla/5.0 (Linux; Android 9; AFTKADE001) AppleWebKit/537.36 (KHTML, like Gecko) Silk/128.5.4 like Chrome/128.0.6613.194 Safari/537.36	Mobile Silk 128	Fire OS 7
Mozilla/5.0 (Linux; Android 9; AFTKADE001 Build/PS7711.5272N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.244 Mobile Safari/537.36	Chrome Webview 138	Fire OS 7