FIRMWARE
Echo Input (2018)
- Fire OS 6.5.7.2 (NS6572/6416) (code 12718772356, bundle com.amazon.cupcake.android.os)
https://d1s31zyz7dcc2d.cloudfront.net/2026/2/22/88e16ce2-d2c5-4d29-9fd1-1f5494d168c2/update-kindle-cupcake-NS6572_user_6416_0012718772356.bin