it’s up. I am using it. Your account might not registered in motorcraft service. You can follow the instruction from the login page and click forget password to redo the process or register a new one. I had the same issue yesterday.
Thanks man. Tried it. But it doesn't take me to the usb download file step. It stuck in the module config step. My current SYNC version is 22087_PRODUCT. Is this version new enough?
The error of TCU SoftwareUpdate is "Procedure Unsuccesful - Cannot Encode HEX"
Battery supply was good. I inserted the USB for update then I left for a while. When I came back, the console screen shows it will shut off. Then I restarted the update which causes the problem.