DFU via USB error 'The array of supported SoftDevices for the update does not contain the FWID of the current SoftDevice.'

[tSeggerCoor]

Hello, I saw another post with a similar question regarding the same error message from a few years ago that went unanswered, I figured I'd reask the question.

I am attempting to perform DFU over USB. My DK is the nRF52840-DK. I have been successful in the past performing DFU via BLE, but have never done it vie USB. The soft device is s140, which I believe shouldn't matter for this anyway. I created private and public keys, and downloaded the bootloader 'secure_bootloader_usb_mbr_pca10056' onto my board.

I wanted to test the DFU by loading the BLE HRS application onto via usb, so I combined the private key with ble_app_hrs_pca10056_s140.hex using command:

     nrfutil pkg generate --hw-version 52 --application-version 1 --application ble_app_hrs_pca10056_s140.hex --sd-req 0x0100 --key-file private.key app_dfu_package.zip

I then attempted to upload it to the dk via dfu using this command:

     nrfutil dfu usb-serial -pkg app_dfu_package.zip -p COM8

Where I received the following output:

     Traceback (most recent call last):
     File "nordicsemi\__main__.py", line 1537, in <module>
     File "site-packages\click\core.py", line 764, in __call__
     File "site-packages\click\core.py", line 717, in main
     File "site-packages\click\core.py", line 1137, in invoke
     File "site-packages\click\core.py", line 1137, in invoke
     File "site-packages\click\core.py", line 956, in invoke
     File "site-packages\click\core.py", line 555, in invoke
     File "nordicsemi\__main__.py", line 1015, in usb_serial
     File "nordicsemi\__main__.py", line 970, in do_serial
     File "nordicsemi\dfu\dfu.py", line 127, in dfu_send_images
     File "nordicsemi\dfu\dfu.py", line 95, in _dfu_send_image
     File "nordicsemi\dfu\dfu_transport_serial.py", line 256, in send_init_packet
     File "nordicsemi\dfu\dfu_transport_serial.py", line 421, in __execute
     File "nordicsemi\dfu\dfu_transport_serial.py", line 502, in __get_response
     pc_ble_driver_py.exceptions.NordicSemiException: Extended Error 0x07: The array of supported SoftDevices for the update does not contain the FWID of the current SoftDevice.
    [4304] Failed to execute script __main__

The 2nd to last line of the output doesn't make much sense to me, as I thought the soft device is not needed for dfu's over usb. And even so, the s140 soft device is contained in the example ble app, and should be downloaded onto the bootloader automatically via Segger.

Thank you in advance, and feel free to ask me for any other system info!

[Einar Thorsrud]

Hi,

When you made the upgrade image with nrfutil you used --sd-req 0x0100. This is the FWID for S140 7.2.0. Is that the SoftDevice version that is currently flashed on the device? If not, then this error is expected (even if you are right that the SoftDevice is not needed for USB DFU, you have still specified that it is required by the --sd-req option).

[tSeggerCoor]

Hi, thank you. I have solved the issue!

While S140 7.2.0 is the correct version, I had not flashed it to the device. To solve it, I combined the bootloader hex file with the proper softdevice using command

     mergehex -m \<PathToHexFile\> settings.hex -o dfu_client.hex

This combined with the previously mentioned steps led to a successful DFU.

Let's hope this will help someone in the future.