How to flash iMX6ULL over ethernet?

How to flashing an image over ethernet with iMX6ULL ?
I have the Viola carrierboard .I found only articles here for other boards an processors. And in this articles an Script is needed. In the iMX6ULL Image there is no Script available.
I am new in Linux a need a very detailed description .

With Toradex Easy Installer you can install an image over Ethernet/Internet without further doing (make sure to connect a VGA display and USB mouse/keyboard, and select the image and press install). Is this what you are looking for?