FIRMWARE
Fire TV Stick 4K - 2nd Gen (2023)
- 05:59 — Fire OS 8.1.4.9 (RS8149/3133) (code 28723395972, build RS8149.3133N)
https://d1s31zyz7dcc2d.cloudfront.net/2025/8/20/3bdc5ed8-4826-4336-bee9-6aaffb584c57/update-karat-diff-RS8116.2387N_2387_0023757149060-to-RS8149_user_3133_0028723395972.bin