Firmware List:
| # | Model | Version | Region | OS | Size | |
|---|---|---|---|---|---|---|
| 1 | SM-J400G | J400GDXU9CUK1 | PNG | Q(Android 10) | 2.43 GB | Download |
| 2 | SM-J400G | J400GDXU6CTGO | PNG | Q(Android 10) | 2.42 GB | Download |
| 3 | SM-J400G | J400GDXS6BTE1 | PNG | Pie(Android 9) | 2.26 GB | Download |
| 4 | SM-J400G | J400GDXU2ARL1 | PNG | Oreo(Android 8.0.0) | 2.12 GB | Download |
| 5 | SM-J400G | J400GDXU2ARJ2 | PNG | Oreo(Android 8.0.0) | 2.12 GB | Download |
| 6 | SM-J400G | J400GDXU2ARH1 | PNG | Oreo(Android 8.0.0) | 2.08 GB | Download |
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