Install SAMSUNG USB Driver for Mobile Phones (USB Drivers.exe).
Open 'Flashing Tools'.
Run 'Odin3 v1.85.exe'.
Put your Mobile in Download Mode. To do this, Power off your Phone and then Press and Hold Power, Volume down and Home Buttons to Power on. Your phone will give you a warning message. Press Volume up button to continue.
Follow these Steps Only If you have Samsung Kies Installed.
Right Click on Taskbar and Click on Task Manager or Press Ctrl+Shift+Esc.
In Task Manger, go to Processes Tab.
Find Samsung_kies.exe
Right Click on it and Select End Process.
Close the Task Manager.
Now Connect your Mobile to your PC via USB Cable.
When your phone is connected, a box in Odin turns yellow.
Now Select the Files Exactly as Shown in Following Picture