Your phone must have 50 % charging before this process
switch off your mobile remove the battery (if removable) reinsert the battery and plug the USB cable in charging socket
Now open SPflash tool.exe
When sp flash tool open, go to download button in sp flash tool
In download tab, click on scatter load button
After locating the scatter tab, click on the download button
Now connect your smart phone with a USB cable and press volume up or volume down key for easy detection (remove and re insert your phone battery if it is removable)
Now flashing is completed, a green ring will appear in sp flash tool
Close sp flash tool on your computer and unplug phone
Power on the phone and enjoy
Flashing method for SPD
HOW TO FLASH
Download and Install Spreadtrum USB Driver on your Computer. If in case Spreadtrum Driver is already installed on your computer then SKIP this Step.
Download .pac firmware for your device (Itel, other)
Download and extract Spreadtrum Upgrade Tool on your computer. Now, open UpgradeDownload.exe.Once Spreadtrum Upgrade Tool is launched, connect your Android device to the computer (make sure your device is switched off).
If Smartphone is properly connected to the computer, click on the Load Packed Button and add the .pac file (stock rom which comes as .pac).
Having successfully added the .Pac file in Spreadtrum Upgrade Tool, click on the Start Downloading button to begin the flashing.
During the flashing process, your device will restart automatically.
Once flashing is completed, you will be able to see the Green Passed Message in Spreadtrum Upgrade Tool.
Now you have successfully flashed your Android Device using Spreadtrum Upgrade Tool.
After the device is booted up successfully, Go to Settings > About Phone > Check firmware. Done!