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Echo Dot 2nd Gen (2016)

Model AEOBC. Fire OS 6.5.7.3 (NS6573/7577), build 12920396164, recorded Jun 12, 2026.

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Firmware package identifier com.amazon.biscuit.android.os. This page preserves the metadata associated with one public firmware source record.

Version Name Fire OS 6.5.7.3 (NS6573/7577)
Version Code 12920396164
Uploaded 2026-06-12
MD5 96013e6d302a65467f4ac56f3e6c72c7

Original public source URL

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https://d1s31zyz7dcc2d.cloudfront.net/2026/6/12/1a2a189d-f33e-4d7d-94a0-9d602c77a0e6/update-kindle-biscuit_puffin-NS6573_user_7577_0012920396164.bin Open source URL