There are a number of ways to burn a bootloader to an Arduino device, but the one I used (for convenience and speed) was to use an Arduino Uno as an ISP (In-System Programmer). This is well documented and I've
install Rapsberry pi pico/RP2040 board types by "Earle F. Philhower, III" and try to burn a bootloader. Expected behavior Should burn the bootloader to the atmega32U4 Arduino CLI version 1.0.2 Operating system Windows Operating system version Latest updates Additional context INFO[0007] Executing...
The whole source is 1.4G, of which you’ll only need 16M, so you may just want to use the sources installed by the IDE. On Ubuntu, see /usr/share/arduino. I recommend making a copy as you’ll need to make some changes. Change to the ./hardware/arduino/bootloaders/optiboot directory...