Okay, I got your point. Normal FW update would only take only one minute or two.
1) Make sure your disk drive is visible on Device Manager. > Win Key + R then type devmgmt.msc >expand disk drive and your drive should be listed there. (Check the model #)
2) If not listed; you have a dead or badly connected drive. Cannot continue!
3) If drive is visible > type Win Key + R, then type diskmgmt.msc > your drive should be listed on Disk Management. If not; Win Key + R then type CMD to start command prompt.
4) In command prompt type mountvol /e and shut down your PC.
5) Disconnect all USB drives and AC power cable or battery and adaptor cable it is a notebook.
6) Wait for 2 min. and reboot. Go back to step 3. and assign “W” as drive letter for your drive.
7) Now uninstall ANY antivirus program you have. Reboot again.
8) Connect your USB device in question after completing start up. Now try to run firmware update utility downloaded from WD.
9) If successful, reinstall AV.
10) If all unsuccessful, return your drive and look for other brand/product.