On Linux, in order for Mu to work With all the MicroPython centered devices you need to ensure you add yourself to the correct permissions group (generally the dialout or uucp groups). Also Ensure that your distribution immediately mounts flash devices, or make sure to mount them manually. The https://elliottedatp.theobloggers.com/42635498/a-review-of-the-golden-colossus-event-mu-online