Firmware and Smartware won't install

Trying to install Firmware updater and it tells me to unplug all USB devices and then click “rescan”.  It keeps repeating this message and the only drive I have plugged in is the WD drive. 

How can I unplug ALL the USB devices and hit “rescan” if my mouse and keyboard are USB devices?

Help!

Hi there, I have no issues updating the firmware with a USB mouse on my NetBook, what if you check if you have the latest firmware first under settings> drive settings> look the lower left corner?