How to connect STM32h743zi to STLink ?

[Nil-DA]

I make a board with a STM32H743ZI microcontroller and I don't really understand how to program it. The datasheet of the microcontroller is not very clear about that point. I have looked the schematic of the Nucleo board H743ZI and I undestand that only a USART and a JTAG/SWD link is needed. Is it this ? How do i do that with an USB ST link V2 or V3 ? This microcontroller have a bootloader. On the Bootloader documentation ST explains that bootloader is used to program the flash memory but in the nucleo board they don't use the the USART port of the bootloader to program the microcontroller.

[Tesla DeLorean]

The ST-LINK just needs to use the SWD connections. You can download code with tools like the STM32 Cube Programmer app, or tools integrated into your IDE, say Keil or IAR.

The JTAG/SWD methods do not require a loader to be present.​

I guess it helps to read and understand the documentation before building the board.