Download the arduino ide that matches your operating system follow the installation process for the application and run it edit add a comment to upload the bootloader to the arduino leonardo, select the arduino leonardo board from tools->board->arduino leonardo. Leonardo bootloader download. Because of the automatic reset on the diecimila, its bootloader needs only wait a very short amount of time (less than a second) - to save time, it also flashes the pin 13 led only once the ng bootloader waits about 6-8 seconds and flashes the led three times the bootloader that actually shipped on the arduino ng is slightly different.
leonardo bootloader download
I am doing project with chinese arduino pro micro board which should be fully compatible with arduino leonardo i also upload standard "catherina-leonardo" bootloader into this module everythinks was working fine until i enable watchdog by "wdt_enable()" function in my code now it is not possible to upload new sketches via usb cdc serial port. Uploading leonardo (micro) bootloader to atmega32u4rc with ice
