Performing a DFU

The dfu command performs a Device Firmware Update.

Use this command to perform a device firmware update by transferring a DFU package to the nRF5 IC. Several transports are available. You can display a list of supported transports by entering the following command:
nrfutil dfu --help
Make sure that the transport you select matches the DFU bootloader that is installed on the DFU target device.