I emailed Intellijel a week ago, and got no response, so I thought I would try the forum. I bought my unit from moog audio a couple of years ago and wanted to update the firmware. I followed the instructions on how to go about this on mac, but when I plug in the unit, its says “failed to attach the device, usb-blaster (0400) to the virtual machine.” I’ve tried every usb port, added a filter to the usb page, and tried an older version of virtualbox, with no luck. The blue light glows on the unit, but it disappears from the usb devices after a while. Any help would be greatly appreciated. Thanks.