nRF54L15 DK Build Error: Unknown Device Family (Generic)

[wac_2025_may]

Hi, I'm a beginner and I'm trying to run an LED blinking program.
However, I'm encountering a device-related error.

I've followed tutorials and installed all the necessary tools and SDKs.

But I always get the following error:

FATAL ERROR: command exited with status 1: nrfutil --json device x-execute-batch --batch-path
Device error: Unknown device: Unknown device family (Generic)

Can someone help me understand what this error means and how to fix it?
Thank you.

[Menon]

Hello,

Which SDK version and toolchain are you using here? Make sure you are using the right toolchain for the SDK you are trying to use. To get more details on the issue you are facing could you run the following commands in a cmd.exe terminal in VS Code:

set NRFUTIL_LOG=trace
west flash·

Then, collect the logs from <USERHOME>/.nrfutil/logs/nrfutil-device.log.

Kind Regards,

Abhijith

[wac_2025_may]

Hi,
Thanks for reaching out.
Let me share more details about the SDK and the device I’m using.

I’m currently evaluating the nRF54L15-PDK.

I followed the tutorials from the link below and used the installation option under the tab [For v3.0.0 (default)] and [v2.9.0 and v2.7.0].
https://academy.nordicsemi.com/courses/nrf-connect-sdk-fundamentals/lessons/lesson-1-nrf-connect-sdk-introduction/

I have already tried SDK versions v3.0.1, v3.0.0, and v2.9.1 along with their corresponding toolchains.

However, I was not able to flash the device with any of these versions.

I also tried v2.0.7, but that didn’t work for me either.
So far, I’ve tested four different SDK versions.

I’m trying to run the Blinky sample located at zephyr/samples/basic/blinky.
Regardless of the version I use, I always get the error message shown below.

*****************************************************************************
Error: One or more batch tasks failed:
* 1057798836: Device error: Unknown device: Unknown device family  (Generic)

FATAL ERROR: command exited with status 1: nrfutil --json device x-execute-batch --batch-path

*****************************************************************************

Additionally, the GUI tools — Quick Start Test and Direct Test Mode — are also not working for me.

The build was successful using Visual Studio Code, and a merged.hex file was generated.

 >set NRFUTIL_LOG=trace 
>west flash·
'west' is not recognized as an internal or external command,
operable program or batch file.

[wac_2025_may]

Below given given commands are also not working.

nrfjprog.exe --eraseall
nrfjprog.exe --reset

 nrfjprog.exe --recover

Thank you.

[wac_2025_may]

[wac_2025_may]

[wac_2025_may]