I have updated all the firmware in AC and RC. Using current APP program. But when I attempt to start up and fly, all I get is "ESC ERROR, restart aircraft etc". Now I am at a complete standstill. Scratching my head and behind trying to figure this one out.

Unfortunately, looks like your ESC board is bad. Means you have to send it in for repair.

Has this only started since the update was done ? If so then I would revert to previous version and then try the update again. Small chance it might be a glitch in the update.

Hello localizer01, if this error comes up after upgrading, give it a try to upgrade the drone again. But if it keeps failing, please contact our North American service center as below:
Email: support.us@dji.com
Phone: +1 (818) 235 0789  
Mon-Fri 9:00 am - 5:00 pm (PST)