Thanks! This worked and the update is done!You need to reinstall the drivers. It's malfunctioning, I've had the same problem.
Try this:
Goto add/remove programs and remove everything Samsung/Android related.
Reinstall Samsung flashing utility setup.
Plug in phone
Check device manager under "modems" for your samsung device
if it's not there, remove usb, and reconnect it (this usually does it for me)
Device manager should now have your device under 'modems'
Run the utility and voila! should work.
	
 enjoy