FRUSTRATION LEVEL REDUCED 2/3rds.
After repeating the process a number of times, I finally got the program to upgrade on a specific COM port ( not COM 1) for two(2) of the TIUs (YEAH!)
On the version G TIU no success; the stereo cable is new. My tries did NOT allow me to SELECT the COM port as it continues to show COM 1;
I just plugged my USB connector into various USB ports on my PC. the program will not find the specific port ( even when I try that feature) just says COM 1 each time.
Ken (see above) will try to do this for me . . . thank you Ken.
I still think that this LOADER needs work. I used be a software developer and wrote engineering design software for civil/structural engineers. Well written software even complex software needs to be easy to use and a bit intuitive knowing how the user is likely to use the software. I don't think the LOADER qualifies on all counts.