[ STM32 Microcontroller ] +-----------------------+ | ( ) ( ) ( ) ( ) ( ) | <--- Locate Pin BOOT0 | | | [Jump BOOT0 to 3.3V] | <--- Forces Hardware DFU Mode +-----------------------+ Required Hardware An electronics soldering iron tool kit. An external ST-Link V2 USB programmer device. A clean source file of the B03-ST_429_H11 firmware binary. Physical Reflashing Sequence