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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.
@Andreas_Rozek
Ok, I found out that every retry added approx. 1% of the firmware, so I had to retry approx. 100x in order to get everything sent to my device~~ - at least, it claimed so, but my firmware is still the old one.~~
Correction: no, it did update my firmware, I just looked at the wrong place. The best place to see the current firmware version is in the Web IDE console after connecting to the watch