Can't program for STM32F746G-DISCO using STM32-ST-Link-Ultility

[HAnh]

Hi Everyone.

I have problem with  STM32F746G-DISCO when i program .hex file demo as link https://www.touchgfx.com/resources/demos/

i'm doing step by step follow in pdf file attached in demo folder.

When i load .hex file in folder "3DBoxDemo" it is OK and run normal.

When i load .hex file in folder "touchgfx_demo2014" it show me a message as "TimeOut" picture. But when i restart STM32F746G-Disco, i see that have program running, but background color is red.

This happen again when i load .hex file in folder "touchgfx_demo2015_480x272_8MB", that mean i see that have program running, but background color is red.

I'm afraid that QSPI chip on STM32F746G-Disco have problem, so that it can't load background.

i hope anyone can help me solve this problem.

Thanks And Best Regards.

[AVerb.2]

There is another way to flash the board:

openocd -f board/stm32f746g-disco.cfg -c "program C:/MDK/Boards/ST/STM32F746G-Disco/32F746GDISCOVERY_demo/STemWin/Binary/STM32746G-DISCO_Demo_V1.5.0.hex reset exit"