Latest Amazon Fire Max 11 user agents:

User Agent	Browser	Platform
Mozilla/5.0 (Linux; Android 11; KFSNWI 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; KFSNWI 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; KFSNWI Build/RS8338.3339N; 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
Mozilla/5.0 (Linux; Android 11; KFSNWI 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/540.0.0.49.148;IABMV/1;]	Facebook 540	Fire OS 8
Mozilla/5.0 (Linux; Android 11; KFSNWI 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/537.0.0.47.77;IABMV/1;]	Facebook 537	Fire OS 8
Mozilla/5.0 (Linux; Android 11; KFSNWI 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; KFSNWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/144.3.1 like Chrome/144.0.7559.228 Safari/537.36	Mobile Silk 144	Fire OS 8
Mozilla/5.0 (Linux; Android 11; KFSNWI) 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; KFSNWI 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/541.0.0.85.79;IABMV/1;]	Facebook 541	Fire OS 8
Mozilla/5.0 (Linux; Android 11; KFSNWI 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/549.0.0.61.62;IABMV/1;]	Facebook 549	Fire OS 8
Mozilla/5.0 (Linux; Android 11; KFSNWI) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.7559.228 Safari/537.36	Chrome 144	Fire OS 8
Mozilla/5.0 (Linux; Android 11; KFSNWI 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
[FBAN/FB4A;FBAV/549.0.0.61.62;FBBV/891620510;FBDM/{density=1.3312501,width=2000,height=1125};FBLC/en_US;FBRV/899682611;FBCR/;FBMF/Amazon;FBBD/Amazon;FBPN/com.facebook.katana;FBDV/KFSNWI;FBSV/11;FBBK/1;FBOP/1;FBCA/arm64-v8a:;]	Facebook 549	Fire OS
Mozilla/5.0 (Linux; Android 11; KFSNWI 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/551.1.0.58.63;IABMV/1;]	Facebook 551	Fire OS 8
Mozilla/5.0 (Linux; Android 14; KFSNWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/128.1.56 like Chrome/128.0.6613.131 Safari/537.36	Mobile Silk 128	Fire OS
Mozilla/5.0 (Linux; Android 11; KFSNWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/131.0.4999 like Chrome/131.0.6778.0 Safari/537.36	Mobile Silk 131	Fire OS 8
Mozilla/5.0 (Linux; Android 11; KFSNWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/130.3.3 like Chrome/130.0.6723.102 Safari/537.36	Mobile Silk 130	Fire OS 8
Mozilla/5.0 (Linux; Android 11; KFSNWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/130.1.66 like Chrome/130.0.6723.86 Safari/537.36	Mobile Silk 130	Fire OS 8
Mozilla/5.0 (Linux; Android 11; KFSNWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/130.0.4999 like Chrome/130.0.6711.0 Safari/537.36	Mobile Silk 130	Fire OS 8
Mozilla/5.0 (Linux; Android 11; KFSNWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/130.0.4999 like Chrome/130.0.6699.0 Safari/537.36	Mobile Silk 130	Fire OS 8