I tried connecting BOOT0-3.3 V and PB7,PB6-RX,TX or PA10,PA9-RX,TX, but I get an error every time. What am I doing wrong? I also tried other speeds and holding RESET, but nothing helped.

I have NUCLEO-H743 board. After I load the firmware with this pin configuration, the board began to give an error STLINK (PB4 is NJTRST). Initially, the board was flashed even with this configuration, but after Debugging it stopped. I was advised to ...