I went crazy while, after a failing update, fastboot didn't see my device via USB-C to USB-C cable.Updated the image,
I did try a USB C to C cable to see but i've mainly been using the one that came with it in the box as well as one i already had and on all the USB ports i have. I have a 3.0 Cable coming in to see if that fixes anything
Unfortunately, I do have those drivers already installed prior to the process
Then, by chance, I tested a USB-A to C, and it worked.
After that, can't tell you why, fastboot works fine again with the USB-C to USB-C cable. In my case no need to update drivers