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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.
jose1711
Thanks! There's another option too - the BOOT0 contact needs to be pulled to 3.3v, so you can also take a male-female jumper wire, connect it to 3.3v, and then hold it into the pad. It can be a bit easier than shorting, as it means you don't have to press the button as well!
Just out of interest, what was the a reason you needed to enter DFU mode? It's usually pretty rare.