Failed to erase device nrf52840dk quick start

[Zach Strout]

I am getting started with the nrf52840 dk, and I am unable to clear the flash with the Quick start . Here are my logs:

2025-09-24T02:11:29.285Z INFO Initialising the bundled nrfutil device
2025-09-24T02:11:29.344Z DEBUG Started watching devices
2025-09-24T02:11:29.779Z INFO Using the bundled core version for nrfutil device: 8.0.0
2025-09-24T02:11:29.920Z INFO Using nrfutil device version: 2.13.2
2025-09-24T02:11:29.920Z INFO Using nrf-device-lib version: 0.19.0
2025-09-24T02:11:29.921Z INFO Using nrf-probe version: 0.45.0
2025-09-24T02:11:29.921Z INFO Using SEGGER J-Link version: JLink_V8.60
2025-09-24T02:11:32.285Z DEBUG Selected device: nRF52840 DK
2025-09-24T02:11:32.306Z DEBUG Changed step: Info
2025-09-24T02:11:33.475Z DEBUG Changed step: Rename
2025-09-24T02:11:34.498Z DEBUG Changed step: Program
2025-09-24T02:11:37.039Z ERROR device Some(DeviceBasicInfo { serial_number: Some("0001"), vendor_id: "174F", product_id: "244C", interface_number: None }) has driver issue: 16 check CM_PROP if it is valid one
2025-09-24T02:11:47.133Z ERROR Failed to initialize worker: Timed out waiting for response from worker.
2025-09-24T02:11:51.333Z ERROR Trace channel disconnected unexpectedly.
2025-09-24T02:11:51.335Z ERROR Worker exited with error code 1.

Some other factors:

- Nrf power source is set to USB

- sw6 is set to DEFAULT. 

- The board is on.

- The usb cable is good. I have tried several, and it is the same. I have also tried the cables with other devices, and those work fine. 

[Kenneth]

Hello,

If you haven't already, try to use the nrfutil directly from command line to see if you are for instance able to run the following 3 commands (you may also need to install j-link):

If that doesn't work, then try to run JLinkConfig and right-clicking the probe, and then selecting Update firmware:

Normally though, you don't need the Quick start, you may as well just follow: https://academy.nordicsemi.com/ Starting with https://academy.nordicsemi.com/courses/nrf-connect-sdk-fundamentals/ 

Kenneth

[Zach Strout]

Yep, that did it. The first `nrfutil upgrade device` command did not work. So I went to the jlink configure software and it said that there was no valid firmware on the board. I think it also said that whatever was on the board was from 2021 while the current firmware is from Feb of 2025.

I was able to compile and run the hello world sample and have it print out. 

Thanks!