How to program firmware to external SPI Flash of nRF54L15

Question

Hi Support Team

We follow the guidance of the following link to program firmware to external SPI Flash of nRF54L15,but it failed.

https://docs.nordicsemi.com/bundle/nrfutil/page/nrfutil-device/guides/programming_external_memory.html#example-for-spi-on-nrf54l15

The following screenshot is schematic of external flash connected with nRF54L15.

And the attachments are the .json file I used for the nRF Util command and the log. Could you help analyze this issue? Many thanks.

Fullscreen 0601.nrf54l15_spi_config.json Download

{
    "firmware_config": {
      "peripheral": "SPIM00"
    },
    "pins": {
      "sck": 26,
      "csn": 27,
      "io0": 6,
      "io1": 8,
      "io2": 67,
      "io3": 64
    },
    "flash_size": 8388608,
    "page_size": 4096,
    "sck_frequency": 8000000,
    "address_mode": "MODE24BIT"
  }

Fullscreen 2766.nordic_flash.txt Download

C:\mcDev\mc_code\l5_e1_sol\build_testuart>nrfutil device --x-ext-mem-config-file ./nrf54l15_spi_config.json program --firmware merged.hex --serial-number 69405822
error: unexpected argument '--x-ext-mem-config-file' found

  tip: a similar argument exists: '--x-qspi-config-file'

Usage: nrfutil device <--x-qspi-config-file <PATH>>

For more information, try '--help'.

C:\mcDev\mc_code\l5_e1_sol\build_testuart>