Hello!Prehistory:USB DFU works flawlessly on another my design which is based on the STM32H743ZGT6.When it is powered on with BOOT0=1, I measure 3.3V on the USB_DP processor pin with a USB cable disconnected from the board.Problem:There is a USB DFU ...

I own a proprietary design based on STM32H743ZGT6.Two boards were assembled.Initially both boards work identically.After about two days of software bring-up activity on one board following issues were encountered:1) Debug through JTAG is not possible...