Arduino Portenta H7
Vendor: Arduino
Features: 8MB SDRAM, 16MB Flash, Dual-core processor, USB High Speed Phy, 10/100 Ethernet Phy, CYW43 WiFi/BT Module, DisplayPort over USB-C, 2x80 pin HD connectors
Source on GitHub: stm32/ARDUINO_PORTENTA_H7
More info: Website
Installation instructions
Via 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 -w -a 0 -d 2341:035b -D build-ARDUINO_PORTENTA_H7/firmware.dfu
Or from MicroPython source repository:
make BOARD=ARDUINO_PORTENTA_H7 deploy