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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.
@bart
[SOLVED[
there is bad info on espruino webpage about how to access dfu
on webpage http://www.espruino.com/Firmware+Update#nrf52 you should realease button 2 but it will not go to DFU
on watch there is info you should realease button 1 but it was hard to find it on the watch (letters are small and I believed in webpage)