1- Download STM32H7-Bootloader FW to STM32H747I-DISCO dev-board.
2- Copy CM7.bin, CM4.bin and QSPI.bin files of example application in the repo to SD CARD that has FATFS file system.
3- Insert SD Card to STM32H747I-DISCO dev-board.
4- Reset or power on STM32H747I-DISCO dev-board.
Bootloader will flash example application with this routine.