Latest Amazon Fire HD 10 (2023) user agents:

User Agent	Browser	Platform
Mozilla/5.0 (Linux; Android 11; KFTUWI Build/RS8338.3339N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/142.0.7444.236 Safari/537.36 [FB_IAB/FB4A;FBAV/554.0.0.57.70;IABMV/1;]	Facebook 554	Fire OS 8
Mozilla/5.0 (Linux; Android 11; KFTUWI Build/RS8338.3339N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/142.0.7444.236 Mobile Safari/537.36 [Pinterest/Android]	Pinterest	Fire OS 8
Mozilla/5.0 (Linux; Android 11; KFTUWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/144.2.2 like Chrome/144.0.7559.177 Safari/537.36	Mobile Silk 144	Fire OS 8
Mozilla/5.0 (Linux; Android 11; KFTUWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/146.1.90 like Chrome/146.0.7680.153 Safari/537.36	Mobile Silk 146	Fire OS 8
Mozilla/5.0 (Linux; Android 11; KFTUWI Build/RS8338.3339N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/142.0.7444.236 Safari/537.36 [FB_IAB/FB4A;FBAV/553.0.0.56.58;IABMV/1;]	Facebook 553	Fire OS 8
Mozilla/5.0 (Linux; Android 11; KFTUWI Build/RS8338.3339N) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/142.0.7444.236 Safari/537.36 [FB_IAB/FB4A;FBAV/553.0.0.56.58;IABMV/1;]	Facebook 553	Fire OS 8
Mozilla/5.0 (Linux; Android 11; KFTUWI Build/RS8338.3339N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/142.0.7444.236 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/552.1.0.45.68;IABMV/1;]	Facebook 552	Fire OS 8
Mozilla/5.0 (Linux; Android 11; KFTUWI Build/RS8338.3339N) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/142.0.7444.236 Safari/537.36 [FB_IAB/FB4A;FBAV/552.1.0.45.68;IABMV/1;]	Facebook 552	Fire OS 8
Mozilla/5.0 (Linux; Android 11; KFTUWI Build/RS8338.3339N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/142.0.7444.236 Safari/537.36 [FB_IAB/FB4A;FBAV/543.0.0.55.73;IABMV/1;]	Facebook 543	Fire OS 8
Mozilla/5.0 (Linux; Android 11; KFTUWI Build/RS8333.2734N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/124.0.6367.248 Safari/537.36 [FB_IAB/FB4A;FBAV/552.1.0.45.68;]	Facebook 552	Fire OS 8
[FBAN/FB4A;FBAV/551.1.0.58.63;FBBV/900040550;FBDM/{density=1.5,width=1200,height=1848};FBLC/en_US;FBRV/906331682;FBCR/;FBMF/Amazon;FBBD/Amazon;FBPN/com.facebook.katana;FBDV/KFTUWI;FBSV/11;FBOP/1;FBCA/armeabi-v7a:armeabi;]	Facebook 551	Android 11
Mozilla/5.0 (Linux; Android 11; KFTUWI Build/RS8338.3339N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/142.0.7444.236 Safari/537.36 Instagram 420.0.0.55.74 Android (30/11; 240dpi; 1200x1920; Amazon; KFTUWI; tungsten; mt8169; en_US; 903616219; IABMV/1)	Instagram 420	Fire OS 8
Mozilla/5.0 (Linux; Android 11; KFTUWI Build/RS8338.3339N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/142.0.7444.236 Safari/537.36 [FB_IAB/FB4A;FBAV/552.1.0.45.68;IABMV/1;]	Facebook 552	Fire OS 8
Mozilla/5.0 (Linux; Android 11; KFTUWI) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.7559.246 Safari/537.36	Chrome 144	Fire OS 8
Mozilla/5.0 (Linux; Android 11; KFTUWI Build/RS8338.3339N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/142.0.7444.236 Safari/537.36 Instagram 420.0.0.55.74 Android (30/11; 320dpi; 1920x1200; Amazon; KFTUWI; tungsten; mt8169; en_US; 903616219; IABMV/1)	Instagram 420	Fire OS 8
[FBAN/FB4A;FBAV/551.1.0.58.63;FBBV/900040550;FBDM/{density=1.5,width=1200,height=1848};FBLC/en_US;FBRV/906331682;FBCR/;FBMF/Amazon;FBBD/Amazon;FBPN/com.facebook.katana;FBDV/KFTUWI;FBSV/11;FBBK/1;FBOP/1;FBCA/armeabi-v7a:armeabi;]	Facebook 551	Android 11
[FBAN/FB4A;FBAV/551.1.0.58.63;FBBV/900040550;FBDM/{density=1.5,width=1200,height=1848};FBLC/en_US;FBRV/905213437;FBCR/;FBMF/Amazon;FBBD/Amazon;FBPN/com.facebook.katana;FBDV/KFTUWI;FBSV/11;FBBK/1;FBOP/1;FBCA/armeabi-v7a:armeabi;]	Facebook 551	Android 11
Mozilla/5.0 (Linux; Android 11; KFTUWI) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.7559.177 Safari/537.36	Chrome 144	Fire OS 8
Mozilla/5.0 (Linux; Android 11; KFTUWI Build/RS8338.3339N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/142.0.7444.236 Safari/537.36 [FB_IAB/FB4A;FBAV/548.1.0.51.64;IABMV/1;]	Facebook 548	Fire OS 8
Mozilla/5.0 (Linux; Android 11; KFTUWI Build/RS8338.3339N; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/142.0.7444.236 Safari/537.36 Instagram 416.0.0.47.66 Android (30/11; 240dpi; 1200x1920; Amazon; KFTUWI; tungsten; mt8169; en_US; 879745461; IABMV/1)	Instagram 416	Fire OS 8