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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.
user75414
Ok, if you try uploading the puck.js firmware zip file from here: http://www.espruino.com/binaries/travis/34f43c4987a0067d2f9510b64ae812ed75f59f4a/
And then reboot with the button held down until all 3 LEDs light and then release, the green LED should flash (showing self test was fine) and you should be able to connect properly from then on.