Query about Using DFU Util for Custom Firmware on STM32H7 OpenMV Board

Hello All,
I’m looking to create a custom firmware console demo program for an OpenMV board designed for the STM32H7. I don’t need MicroPython for this. Can I use DFU util to flash, and will it be effective? I had issues with a similar demo program on a Pyboard D series STM32F723 board. I want to confirm before attempting to overwrite the bootloader, Could you please suggest…

You’ll need to use STMCube to flash the firmware or jtag. For some reason the DFU update util for ST parts doesn’t work beyond the first sector of flash on revision V silicon (which has been out for years now).