Fire 7 - 9th Gen (2019)
Model KFMUWI. Fire OS 7.3.3.1 (PS7331/4463), build 31575863172, recorded Jun 11, 2025.
Firmware package identifier com.amazon.mustang.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 | ecc7b0786cccab82446723c474e50bcf |
Original public source URL
FTVDB does not host, mirror, modify, proxy, or distribute this file. This record is public update metadata only.
https://fireos-tablet-src.s3.us-west-2.amazonaws.com/3omHNOvwW4KDYd5xDz75MnJ9npabca/update-kindle-Fire_7_9th_Gen-PS7331_user_4463_0031575863172.bin Open source URL