Just to close this out. I finally did get my TX2 flashed. It was an effort of my own making as I always suspected and the feedback from linuxdev was very helpful and kept me from chasing down windmills - thank you.
So the actual problem was the microUsb to USB cable provided in my developer kit got mixed up with other cables in my office as I excitedly unpacked my kit. That left me with the white microUSB to female USB provided and I just thought ok add a male A USB to male A USB cable and its ready to go. Of course this didn’t work and pretty much at the point of despair. However, after looking at pictures of the development kit I bought from Amazon it struck me there was a black cable in the picture which was a microUSB to USB with distinctive green icons on it. I looked and found the cable in my pile and hooked it up and could finally see the NVIDA device 0955 on my host. From there is was easy using the SDK Manager.
Hope I can contribute something in the future. I have two projects in mind. One is to use face recognition to review videos from the health club I work for and spot persons that are not members. I created their gym management system and need something new to justify my salary. First step may simply be to keep count of the access cards that are scanned when one enters the gym and see if the number of people in the gym are less than or equal to that count. If not log a snapshot of the video and alert the staff.
Another project I want to work on is reading printed music so I can create a midi file and sound files for our choir to practice with. The midi file could drive our electronic organ and be used to accompany the choir during practice as our music director has to accompany us and can’t really direct. I eventually hope to use a camera to watch the director and make the organ play in sync with his direction.
I have a lot to learn but love learning and now that I’m retired have plenty of time for it. With a forum like this how can one go wrong?