FIRMWARE
Fire TV Stick 4K Max - 1st Gen (2021)
- Fire OS 7.2.8.5 (PS7285/2877) (code 23723720068, bundle com.amazon.kara.android.os)
https://d1s31zyz7dcc2d.cloudfront.net/ac0bfc6c85b2fa5000fdc568c30eed60/update-kara-diff-PS7255_2465_0021911675268-to-PS7285_user_2877_0023723720068.bin