FTVDB

Fire HD 8 - 10th Gen (2020)

Model KFONWI. Fire OS 7.3.3.1 (PS7331/4463), build 31575863172, recorded Jun 11, 2025.

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

Version Name Fire OS 7.3.3.1 (PS7331/4463)
Version Code 31575863172
Uploaded 2025-06-11
MD5 3d801044591263a02379f4e34f72787e

Original public source URL

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https://fireos-tablet-src.s3.us-west-2.amazonaws.com/3omHNOvwW4KDYd5xDz75MnJ9npabcc/update-kindle-Fire_HD8_10th_Gen-PS7331_user_4463_0031575863172.bin Open source URL