Resolved! Hi i am Roberto, For my project i need to update the firmware from USB port so i need to use internal bootloader. The MCU is contained into a close box so i can't set BOOT0 pin manually. Do you have any idea ?
My idea is that:I want to put a resistor and a capacitor on BOOT0 pin. When normal code is running and i will go to update the firmware, i will send a command to USB. When MCU will receive this command, MCU will set BOOT0 pin to high state and charge...