Can't burn nrf52840 Dongle in Linux with nrfConnect v3.9.1 with Programmer v2.0.1

[MarcelR]

I can't flash/write my nrf52840 Dongle under Linux with nRFConnect v3.9.1 with Programmer v2.0.1

The buttons remain greyed out, the left window does not display any information.

The log says:

    Using @nordicsemiconductor/nrf-device-lib-js to communicate with target via USB SDFU protocol

    Error when fetching device versions: readFwInfo error

When pressing the reset button, the connection is lost, and the dongle not found any more until I replugin.

### Setup:

Debian 11.1
nrfjprog version: 10.15.1 external
JLinkARM.dll version: 7.58b

How can I fix the situation?

I need to install the sniffer_nrf52840dongle_nrf52840_4.1.0.hex

Thank you
Marcel

[MarcelR]

lsusb shows

Bus 001 Device 125: ID 1915:521f Nordic Semiconductor ASA Open DFU Bootloader

[Øyvind]

Hello Marcel, 

Did it work before? Have you ensured access to the serial port? Do you have other nRF development kits that see same issues? 

Kind regards;
Øyvind

[MarcelR]

The nrf52840-dongle loads fine (my user is member of dialout):

crw-rw----+ 1 root dialout 166, 0 21. Dez 15:09 /dev/ttyACM0

In my screen shot the dongle is displayed with its MAC address and "Unknown".

Currently, I have flashed the .hex on my nrf52840-DK board to be able to use Wireshark.
Nicer would be, to use an nrf52840-dongle...

[Øyvind]

Have you seen our nRF52480 Dongle Programming Tutorial blogpost and the Programming an example using nrfutil chapter? Can you please try with nrfutil?

[adamfowleruk]

I'm experiencing the same issue with the MakerDiary nrf52840 USB dongle on Windows 10 with programmer 2.0.1. Previous programmer versions worked fine - it's purely this version. It's also very slow at detecting devices once plugged in. My dongle is here, and it's attached in DFU mode: https://wiki.makerdiary.com/nrf52840-mdk-usb-dongle/programming/

I'm going to try nrfutil now.