I always work with Debian and it works really fine. But on flashing, i made the observation, that it doesn’t work in CLI when navigating as user to the dir where the flashfiles are, and then perform
sudo bash ./flash.sh
but it works fine when you become root in CLI with su command, then go to the directory where the flashfiles are, then execute
bash ./flash.sh
without sudo.
This makes a big difference because the command as user with sudo doesn’t find the USB port properly while as real root it works as intended.