Application for updating firmware of Stm32 CPU via usb cable using USB DFU protocol. Realization of the application is based on next documents from company STMicroelectronics. 1. AN2606 STM32 microcontroller system memory boot mode 2. AN3156 USB DFU protocol used in the STM32 bootloader How to use application. PREREQUISITE You mobile device must support USB-OTG. PREPARATION 1. Connect Stm32 board with your mobile device by USB-OTG cable 2. Activate bootloader mode for Stm32. How to do th