  Micro-UART cable:
1. Phone must be powered on.
2. Type *#7284# and choose Modem for UART and PDA for USB options.
3. Type *#9090# and choose UART.
4. Reboot phone.
5. Connect the phone to UART port.
6. Choose correct COM port in port settings.
7. Press "Read QCN" button to read backup or "Write QCN" to restore.
  Micro-USB cable:
1. Phone must be powered on.
2. Type *#7284# and choose Modem for USB and PDA for UART options.
3. Type *#9090# and choose HS-USB.
4. Reboot phone.
5. Connect USB cable, install drivers if needed.
6. Select diagnostic port in port settings.
7. Press "Read QCN" button to read backup or "Write QCN" to restore.