Fail to launch on STM32F4 Bleucoin Posted by LaurentL on 2018-09-06 16:57 Hi, Did you connect the STLink reset output to the F4 reset pin ? If yes, you can use the connect under reset mode. If no, use the Software system reset mode. Then, if still not working, add -d in debug openocd options to get a more verbose output. Rgds, Laurent