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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
The bootloader is actually in the images you download, so if you use the instructions for serial flashing then it'll work fine.
Only issue is getting Espruino to recognise the extra memory. For that you'll have to change
boards/ESPRUINOBOARD.pyand then recompile... Otherwise it is quite straightforward.