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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
Glad you got it sorted! This doesn't seem to be too well documented...
Just for anyone else looking, it's the
-s 0x08000000that got you - since that overwrites the bootloader.Calls
st-flashnot dfu-util for some reason, but it does choose the right base address so you can write directly without getting rid of the bootloader.Or
scripts/create_pico_image_1v3.shwill create the full binary (Espruino & Bootloader) which you can write to 0x08000000