I am a lucky owner of navigation system TomTom Start 20. It works quite good, must say and I am satisfied in general. After a while of using decide to update maps and software as this is included as a lifetime service.
And than I got in 3 hour fight to connect the device to PC. I reinstalled software, installed/reinstalled drivers. Tested on 2 computers with 4 different USB cables. No luck. And than by accident saw a message on navigator screen that I must use original cable when connecting to computer because other cables might not work. And yes, found an original cable connected and it magically started to work.
Don't know yet how this TomTom cable is different (maybe data lines swapped ?), but lesson here is to read messages and manuals which are provided by manufacturer. Sometimes it can save you a lot of time. ☺️