FIRMWARE
Echo Dot 2nd Gen (2016)
- Fire OS 6.5.7.3 (NS6573/6562) (code 12853027460, bundle com.amazon.biscuit.android.os)
https://d1s31zyz7dcc2d.cloudfront.net/2026/5/22/c86098a7-c25b-4bb4-8ef5-9fcd38763dae/update-kindle-biscuit_puffin-NS6573_user_6562_0012853027460.bin