Now, you can use the CLI to type “set usb_hid_cdc=off,” or you can leave it on if you wish. The only downside to leaving it on is that you can’t connect to it until you change that option. If that didn’t work, you might need to reflash the FC with “Full Chip Erase”...
Connect the radio to computer via USB cable, your computer should detect a new device connected. Then run the ImpulseRC Driver Fixer (download) if you haven’t done it before just in case, it installs/fixes the DFU driver on your computer. Make sure you don’t have other DFU devices (...