How to download the mbed firmware on to the FRDM-KL25Z If you want to know how to download the mbed firmware onto the FRDM-KL25Z board you can find the instructions at https://mbed.org/handbook/mbed-FRDM-KL25z-Upgrade.Read more Published: May 30, 2014 Categories: Building, Coding, Year 7 - 12