circuitpython/ports/stm32/boards/ARDUINO_PORTENTA_H7/deploy.md

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### Via dfu-util
This board can programmed via DFU bootloader, using e.g. [dfu-util](http://dfu-util.sourceforge.net/).
To enter the DFU bootloader, double tap the reset (blue) button, or you can use `machine.bootloader()` from the MicroPython REPL.
```bash
dfu-util -w -d 2341:035b -a 0 -d 0x8040000 -D firmware.dfu
```
Or from MicroPython source repository:
```bash
make BOARD=ARDUINO_PORTENTA_H7 deploy
```