I'm trying to load a new firmware version. I'm following the steps from the tutorial (https://www.openacousticdevices.info/flashing), and when I reach step 5 (Enable Programming mode), after the LEDs stop flashing, a Windows pop-up letting me know a new device has been plugged appears, but it fails to install any drivers for the device, and I cannot continue de process (no new COM ports appear).
I use Windows 7 Pro. I've googled for drivers but been unable to find any.
Is there any drive/program or procedure that should be run/installed before attempting to flash?