Firmware List:
| # | Model | Version | Region | OS | Size | |
|---|---|---|---|---|---|---|
| 1 | SM-J400M | J400MUBSECVF1 | CHP | Q(Android 10) | 2.48 GB | Download |
| 2 | SM-J400M | J400MUBUCCUG1 | CHP | Q(Android 10) | 2.44 GB | Download |
| 3 | SM-J400M | J400MUBSCCUE3 | CHP | Q(Android 10) | 2.43 GB | Download |
| 4 | SM-J400M | J400MUBSBCUC1 | CHP | Q(Android 10) | 2.43 GB | Download |
| 5 | SM-J400M | J400MUBSACTI1 | CHP | Q(Android 10) | 2.43 GB | Download |
| 6 | SM-J400M | J400MUBU9CTGO | CHP | Q(Android 10) | 2.43 GB | Download |
| 7 | SM-J400M | J400MUBS8BTE2 | CHP | Pie(Android 9) | 2.31 GB | Download |
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