First step to Install Stock ROM

1. Download and Install Spreadtrum USB Driver on your Computer
2. Download and  Spreadtrum Upgrade Tool on your Computer

How To Flash Karbonn Titanium High Plus S320  

1. Download and Install Spreadtrum USB Driver on your Computer. If in case Spreadtrum Driver is already installed on your computer then Skip this Step.
2. Download .pac firmware for your device (Itel, other)
3. Download and extract Spreadtrum Upgrade Tool on your computer.
4. Now, open UpgradeDownload.exe. Once Spreadtrum Upgrade Tool launched, connect your Android device to the computer (make sure your device is switcheded off).
5. If Smartphone is securely attached to the computer, click on the Load Packed Button and add the .pac file (stock ROM which comes as .pac).
6. Having successfully added the.Pac file in Spreadtrum Upgrade Tool, click on the Start Downloading button to begin the flashing.
7. During the flashing process,, your device will restart automatically.
8. Once flashing completed, you will be able to see the Green Passed Message in Spreadtrum Upgrade Tool.
9. Now you have successfully flashed your Android Device using Spreadtrum Upgrade Tool.
10. Note after flashing phone on must 5 to 10 mins.
11. During the flashing process,, your device will restart automatically. Once flashing completed, you will be able to see the Green Passed Message in SPD Upgrade Tool
12. After flashing process, starts, it might take up to 5-10 minutes. So, keep patience and wait
13. See detailed Instruction Spreadtrum Upgrade Tool with images