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  • I guess it's an Espruino Original judging by the blue LED?

    What do you mean by various cables? To get into bootloader mode you should only need to use a normal USB cable, and then hold down BTN1 while tapping RST.

    Dim blue+red means the board hasn't initialised at all, bright blue+red means it is waiting for a USB connection, and pulsing blue means it's properly in bootloader mode.

  • Yes it's an original one, the board just sits on bright red and blue solid LEDs, not dim, I've tried 3 USB leads now, they all work with phones and Arduino Leonardo.

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