Resolved! STM32H5 Need bootloader pins
As per errors in AN2606 and this thread https://community.st.com/t5/stm32-mcus-products/stm32h5-bootloader-uses-usart-pins-that-do-not-match-roles-in/m-p/594610#M224078 I need the correct pins that STM32H563/STM32H573 use for USART1/2/3 and FD-CAN bo...