The latest version is always available here
http://www.espruino.com/binaries/travis/master/
choose the file ending with _banglejs.zip
and follow the step by step description to flash it
http://www.espruino.com/Bangle.js#firmware-updates
@MaBe 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.
The latest version is always available here
http://www.espruino.com/binaries/travis/master/
choose the file ending with _banglejs.zip
and follow the step by step description to flash it
http://www.espruino.com/Bangle.js#firmware-updates