FIRMWARE
Flash the C100.
FIRMWARE UPDATE
Ready. Do not disconnect the USB cable during an update.
On Windows and flashing for the first time? One-time USB driver setup (macOS / Linux: nothing to do).
On Windows and flashing for the first time? One-time USB driver setup (macOS / Linux: nothing to do).
Windows needs a one-time USB driver (WinUSB) for the C100 bootloader.
Have you installed it?