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Echo Dot 2nd Gen (2016)

Model AEOBC. Fire OS 6.5.7.3 (NS6573/6562), build 12853027460, recorded May 22, 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 (NS6573/6562)
Version Code 12853027460
Uploaded 2026-05-22
MD5 2187a0aea5fad42b8362a1581044bcdc

Original public source URL

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https://d1s31zyz7dcc2d.cloudfront.net/2026/5/22/c86098a7-c25b-4bb4-8ef5-9fcd38763dae/update-kindle-biscuit_puffin-NS6573_user_6562_0012853027460.bin Open source URL