Programming external memory command

To program external memory, use the following command pattern:

nrfutil device --x-ext-mem-config-file <path_to_config_file> program --firmware <hex_file> --serial-number <serial_number> [--options]

In this command pattern:

• <path_to_config_file> is the path to the JSON configuration file that specifies the external memory interface settings
• The --x-ext-mem-config-file option is available from the nrfutil device command level, hence program appears after the flag.
• <hex_file> is the HEX file containing the data to be programmed to external memory (the file can also include the firmware for the internal memory, and both will be programmed as part of the same operation)
• <serial_number> is the serial number of the connected device
• [--options] are the programming options (erase, verify, reset, or combinations thereof)

For example, the following command programs the firmware from data_going_to_external_flash.hex using the configuration from nrf5340dk_qspi_config.json to a device with the serial number 1050065027:

nrfutil device --x-ext-mem-config-file ../../nrf-probe/resources/firmware_config/nrf5340dk_qspi_config.json program --firmware data_going_to_external_flash.hex --serial-number 1050065027