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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
Try installing 1v95, then long-press the button on boot... Like you did with the test method but just keep holding it. All 3 LEDs should come on, then you get 5 red flashes - and release a few seconds after it stops.
That should totally clear out the flash memory (rather than just not loading it) and then allow you to connect properly again.