Arduino Portenta C33
Vendor: Arduino
Features: BLE, Ethernet, External Flash, Secure Element, USB-C, WiFi
Source on GitHub: renesas-ra/ARDUINO_PORTENTA_C33
More info: Website
Installation instructions
dfu-util
This board can programmed via DFU bootloader, using e.g. dfu-util.
To enter the DFU bootloader, double tap the reset (blue) button, or you can use machine.bootloader() from the MicroPython REPL.
dfu-util -a 0 -d 2341:0368 -D build-ARDUINO_PORTENTA_C33/firmware.bin -Q # -s :leave