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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.
@pc3b3r
@Gordon, yes I went away from the watch with the mobile during the upload.
Ok, found the issue: I downloaded the firmware twice and of course the name of the zip file has been changed
espruino_2v04_banglejs (1).zip.Guess which is the right one?
Using nRF Toolbox was easy to understand because it's not validating it by showing
Status: Invalid file