Step 1; Download and Install vcom driver on your computer.Skip this step if in case driver is alread installed on your computer.
Step 2; Download stock rom (firmware) for your device
Step 3; Download and Extract sp flash tool on your computer.After extract ,Now open sp flash tool
Step 4; Once sp flash tool is launched , Click on the scatter loading file and add the stock rom (firmware)
Step 5; Now click download button to begin the flashing , then connect your device to the computer (make sure your device is switch off)
Step 6; During the flashing process your device will restart automatically . Once flashing is completed you will see the "download ok" message.
Step 7; Now you have successfully flashed your device.