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]

Menon said:

Abhijith

Hi,

I was able to flash the firmware properly after switching from the nRF54L15-PDK to the nRF54L15-DK.
I plan to continue using the nRF54L15-DK from now on..

It seems that my nRF54L15-PDK might have been write-protected or had some other issue.

Just in case, I’ll share a screenshot of the problematic screen I encountered with the PDK.

FYI: I was unable to post all of my questions in a single reply due to some restrictions on the Nordic DevZone, so I had to split them into multiple Reply posts (above/below).