Echo Flex (2019)
Model AEOCR. Fire OS 6574.1 (NS65741/8142), build 13222530692, recorded Sep 9, 2026.
Firmware package identifier com.amazon.croissant.android.os. This page preserves the metadata
associated with one public firmware source record.
| Version Name | Fire OS 6574.1 (NS65741/8142) |
| Version Code | 13222530692 |
| Uploaded | 2026-09-09 |
| MD5 | 8b40b0ef93a09f163054adf6183c89a7 |
Original public source URL
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https://d1s31zyz7dcc2d.cloudfront.net/2026/9/9/adbb9740-d61d-455e-9da1-fef4ae62717f/update-kindle-croissant-NS65741_user_8142_0013222530692.bin Open source URL