Firmware List:
| # | Model | Version | Region | OS | Size | |
|---|---|---|---|---|---|---|
| 1 | SM-J400F | J400FXXS9CVF2 | BKD | Q(Android 10) | 2.63 GB | Download |
| 2 | SM-J400F | J400FXXU9CVC2 | BKD | Q(Android 10) | 2.63 GB | Download |
| 3 | SM-J400F | J400FXXU8CUG1 | BKD | Q(Android 10) | 2.65 GB | Download |
| 4 | SM-J400F | J400FXXU7CTL4 | BKD | Q(Android 10) | 2.63 GB | Download |
| 5 | SM-J400F | J400FXXU6CTH1 | BKD | Q(Android 10) | 2.56 GB | Download |
| 6 | SM-J400F | J400FXXS6BTF7 | BKD | Pie(Android 9) | 2.44 GB | Download |
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