Nucleo H7A3ZI-Q

Vendor: ST Microelectronics
Source on GitHub: stm32/NUCLEO_H7A3ZI_Q
More info: Website

Installation instructions

STM32 via ST-Link

Nucleo and Discovery boards typically include a built-in ST-Link programmer.

A .bin or .hex file can be flashed using st-flash.

# Optional erase to clear existing filesystem.
st-flash erase

# Flash .bin
st-flash write firmware.bin 0x08000000
# or, flash .hex
st-flash --format ihex write firmware.hex

A .hex file can be flashed using STM32 Cube Programmer.

STM32_Programmer.sh -c port=SWD -d firmware.hex -hardRst

STM32 via DFU

Boards with USB support can also be programmed via the ST DFU bootloader, using e.g. dfu-util or pydfu.py.

To enter the bootloader the BOOT0 pin can be connected to VCC during reset, or you can use machine.bootloader() from the MicroPython REPL.

dfu-util --alt 0 -D firmware.dfu

Firmware

Preview builds

v1.27.0-preview.366.g6773051b5a (2025-10-25) .dfu / [.hex]
v1.27.0-preview.355.g7373338fa9 (2025-10-24) .dfu / [.hex]
v1.27.0-preview.355.g7373338fa (2025-10-24) .dfu / [.hex]
(These are automatic builds of the development branch for the next release)