This is one of many ways to perform a factory reset on your Icon device.
In particular - this method will use the Lifesize remote control to navigate the on-display User Interface.
*please note a factory reset will wipe out all of your local settings*
First; select the right-most option from the top-most row of options 'System'>
Next; from the subsequent row of options, select the right-most option again 'Administrator'>
The default Administrator password from this menu option is '1234'
Assuming the password you entered was correct:
Finally; from the subsequent row of options, select the middle option 'Reset'>