How to flash your smartphone :

Instruction

  1. Download the Firmware to your computer.
  2. Extract the file on your computer’s drive.
  3. Download the correct USB driver.
  4. Extract the file.
  5. Install the USB Driver.
  6. Download Research-Download Tool.
  7. Run the Research-Download Tool.
  8.  Should load PAC files from the retrieved flash file folder.
  9. Press and hold ‘Volume-up’ and ‘Volume-down’ keys
    Connect your Device using a USB Cable.
  10. Click the Start Download/upgrade Firmware of the SPD Research Tool Tool to start flashing.
  11. And wait for the process to finish, and please do not unplug your Device before completing the process.
  12. There will be a green ring display for quick success.