I just checked the computer that I used to update mine and found that the version of the updater installed is also 2.02. I seem to remember that when I updated mine, I also received the "no devices" message. I'm pretty sure that the issue was that I needed to use its original cable rather than whichever random USB cable that I had grabbed.
I did a quick Amazon search for "Trio USB cable" and found a couple that claim to be "Digitech Trio Compatible", so that may be an option if you don't find one elsewhere. You can probably also reach out to Digitech Support to see what they tell you:
https://digitech.com/contact-us/
I'm hoping that I won't need to update mine again given that the original cable is now in a drawer full of a couple dozen other miscellaneous USB cables!