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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.
@Gordon
@user139891 if you can't connect to the bootloader with NRF toolbox, and you tried more than one device this sounds like a hardware failure. I'll ask Christine to get in touch with you by email about a replacement.
@user141797 I don't understand what you mean here? Did you definitely boot it up in Bootloader mode (showing the
DFU STARTmessage) and then tried to search with NRF Toolbox? And did you try to connect to it with more than once device? It's been known that sometimes PCs/phones/etc will need a power cycle to detect devices again.