I was in this same position and installed the Silicon Labs driver. I was then able to identify the port (/dev/tty.SLAB_USBtoUART). I hit an issue trying to flash the chip. A few weeks later a colleague suggested how to resolve the flashing issue, but when I go to try this, I find that the port is no...

I have been struggling with the same issue. I had visibility of the port, with the same name, a few weeks ago. Now I don't and restarts, reinstallation of the driver, etc. have not resolved the issue. A colleague suggested that "Some USB-to-serial devices on Mac leave tied up kernel modules, where t...