What device are you using? At some time, I failed similarly with IDE Flasher on Ubuntu, but succeeded on using it on Android.
@Mi started
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
What device are you using? At some time, I failed similarly with IDE Flasher on Ubuntu, but succeeded on using it on Android.