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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.
@Jscott
Okay, that was me being stupid. There are two pages on the Espruino site about using the serial bootloader, which I assume is required since we swapped the chip out. Still curious about how to restore the Espruino boatloader after we're done. I gather this from the statement "Note: Espruino boards have a USB implementation of the STM32 bootloader protocol built in."