Thank you so much, very kind If i use usb-to-serial converter is there any routine to be executed (pulling up or down any pins or something similar)? Moreover, if i'm working on arduino project, is there a way to make a DFU image to be flashed with built-in USB or to directly flash from arduino IDE ...

Hello everyone I'm developing an IoT solution that is just a prototype for the moment. Until now i've used esp32-c3 wroom development boards, to realize the prototypes, and i've flashed the firmware through onBoard USB-Uart converter using Arduino IDE. I would pass to the next step and realize a fir...