导出到U盘: nrfutil prepare-offlineE:/nrfutils 从U盘安装想要的子命令 nrfutil install nrf5sdk-tools--from-offlineE:/nrfutils 具体请参考:https://docs.nordicsemi.com/bundle/nrfutil/page/guides/getting_started.html#installing-nrf-util-when-offline...