[petecat1]

I can probably get a workaround by installing on older version of FreePBX via Ubuntu.  But my question is this:  If there is no option to restore the Stock Firmware via your script for this model (ie choosing option 9)....is there any way to re-load my backup of the ChromeOS and restore to the original state? 

 You can absolutely restore the stock firmware (using a backup created by the script prior to flashing) via the script, I'm not sure why you would think that option is unavailable.  But I'm not sure why you would want to if you plan is to run Ubuntu 

I get this in red text: Unfortunately I don't have a stock firmware available to download for 'FIZZ' at this time.

You are right, at the moment I am working with Ubuntu.  Just wanted to keep my options open if I want to go back to square 1 with the chromebox OS.