To run micropython on our RPi Pico, we need to install some firmware on it. We can use thonny for this too. To do this, in thonny go to Tools > Options... In options, go to the interpreter tab. At ...

To get MicroPython running on the Pico -> with the Pico USB unplugged, hold down the 'BOOTSEL' button on the board and then plug it in to the computer. This should boot the Pico into a special mode ...