```bash
make clean
-make hhkb-blakedietz-dfu
+make hhkb:blakedietz:dfu
```
Press the button on the alternate controller to put the board into boot mode.
You'll see an output similar to the following:
```bash
-make hhkb-blakedietz-dfu
+make hhkb:blakedietz:dfu
Making hhkb with keymap blakedietz and target dfu