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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.
@fanoush
For Q3 you need to build full firmware hex - without
DFU_UPDATE_BUILD=1and you need to have swd debugger dongle that can unlock locked nrf52 chip = anything except stlink v2.maybe most flexible and easy is getting raspberry pico and flashing it with ready made cmsis-dap firmware from https://github.com/majbthrd/DapperMime/releases