Latest Fire OS 7 user agents:

User Agent Browser Device
Dalvik/2.1.0 (Linux; U; Android 9; AFTSS Build/PS7714.5506N) Android Browser Fire TV Stick Lite (Gen 1)
Mozilla/5.0 (Linux; Andr0id 9; AFTSHN-03) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.7390.108 Safari/537.36 OMI/4.26.2.309.AFTdev.1010 HbbTV/1.6.1 ( DRM;Amazon;AFTSHN-03-JVC-LT-40VRF34IW;0035199974020;unknown;com.amazon.shine;) smarttv_AFTSHN-03-JVC-LT-40VRF34IW_Build_0035199974020_Chromium_141.0.7390.108 LaTivu_2.1.0_2025 Opera Devices 4 Unknown
Mozilla/5.0 (Linux; Andr0id 9; AFTSHNQFRLHD-04-AFTMA2857F-Freely-1AE-1DB-001) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.7390.123 Safari/537.36 OMI/4.26.2.309.AFTdev.1070 HbbTV/1.5.1 ( DRM;Amazon;AFTSHNQFRLHD-04-AFTMA2857F-Freely-1AE-1DB-001;0035602661252;unknown;com.amazon.shine;) smarttv_AFTSHNQFRLHD-04-AFTMA2857F-Freely-1AE-1DB-001_Build_0035602661252_Chromium_141.0.7390.123 LaTivu_1.0.1_2019 Opera Devices 4 Unknown
Mozilla/5.0 (Linux; Android 9; KFKAWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/138.14.12 like Chrome/138.0.7204.244 Safari/537.36 Mobile Silk 138 Fire HD 8 (2018)
Mozilla/5.0 (Linux; Android 9; AFTTIFF43 Build/PS7714.6503N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.244 Mobile Safari/537.36 Chrome Webview 138 Fire TV Omni QLED (2022)
Mozilla/5.0 (Linux; Android 9; AFTHA001 Build/PS7714.5503N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.244 Mobile Safari/537.36 Chrome Webview 138 Fire TV 4K (2021-2022)
Mozilla/5.0 (Linux; Android 9; AFTTIFF43 Build/PS7714.5503N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.244 Mobile Safari/537.36 Chrome Webview 138 Fire TV Omni QLED (2022)
Mozilla/5.0 (Linux; Android 9; KFTRWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/138.14.12 like Chrome/138.0.7204.244 Safari/537.36 Mobile Silk 138 Fire HD 10 (2021)
Mozilla/5.0 (Linux; Android 9; KFTRWI Build/PS7331.4463N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.244 Safari/537.36 [FB_IAB/FB4A;FBAV/493.0.0.72.158;] Facebook 493 Fire HD 10 (2021)
Mozilla/5.0 (Linux; Android 9; KFMAWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/138.14.12 like Chrome/138.0.7204.244 Safari/537.36 Mobile Silk 138 Fire HD 10 (2019)
Mozilla/5.0 (Linux; Android 9; KFKAWI Build/PS7331.4463N) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.244 Safari/537.36 [FB_IAB/FB4A;FBAV/563.1.0.50.73;IABMV/1;] Facebook 563 Fire HD 8 (2018)
Mozilla/5.0 (Linux; Android 9; KFTRWI Build/PS7331.4463N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.244 Safari/537.36 [FB_IAB/FB4A;FBAV/407.0.0.30.97;] Facebook 407 Fire HD 10 (2021)
Mozilla/5.0 (Linux; Android 9; AFTKA002 Build/PS7713.5443N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.244 Mobile Safari/537.36 Chrome Webview 138 Fire TV 2-Series (2023)
Mozilla/5.0 (Linux; Android 9; AFTSO001 Build/PS7712.5370N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.244 Mobile Safari/537.36 Chrome Webview 138 Fire TV 4K (2019)
Mozilla/5.0 (Linux; Android 9; AFTGAZL Build/PS7714.5503N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.244 Mobile Safari/537.36 Chrome Webview 138 Fire TV Cube (Gen 3)
Mozilla/5.0 (Linux; Android 9; AFTSS Build/PS7714.5503N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.244 Mobile Safari/537.36 Chrome Webview 138 Fire TV Stick Lite (Gen 1)
Mozilla/5.0 (Linux; Android 9; KFONWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/138.14.12 like Chrome/138.0.7204.244 Safari/537.36 Mobile Silk 138 Fire HD 8 (2020)
Mozilla/5.0 (Linux; Android 9; AFTTIFF43 Build/PS7713.5443N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.244 Mobile Safari/537.36 Chrome Webview 138 Fire TV Omni QLED (2022)
Mozilla/5.0 (Linux; Android 9; AFTALMO Build/PS7713.5443N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.244 Mobile Safari/537.36 Chrome Webview 138 Unknown
Mozilla/5.0 (Linux; Android 9; AFTSSS Build/PS7714.5503N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.244 Mobile Safari/537.36 Chrome Webview 138 Fire TV Stick (Gen 3)