nRF52840-DK not detected

[xhr0428]

I just bought a new nRF52840-DK. But it cannot be detected when connecting to the computer. In nRF Connect Programmer, it shows "Unsupported device. The detected device could not be recognized as neither JLink device nor Nordic USB device. "

I tried nrfjprog commands

nrfjprog —family nRF52 —eraseall returned

JLinkARM DLL reported an error

nrfjprog —family nRF52 —recover returned

Recover failed. Please make sure that the correct device family is given and try again

I also tried to follow the steps in the below thread, but after copying the file to JLink folder, only a FAIL text file appeared in the folder. The text file has this line inside "The currently active SWD interface does not support MSD drag and drop"

 nRF52840 dev board not detecting 

How should I get this to work? Thanks

[tesc]

Hi,

What version of the nRF52840 DK is this?

The version should be printed on a sticker on the DK, with the code for the nRF52840 DK (PCA10056) followed by a version number and a date on the format YYYY.WW (where YYYY is year and WW is week number.) Recent DK versions are not necessarily supported by old nRF Command Line Tools versions or older J-Link drivers.

The latest version of nRF Command Line Tools is version 10.16.0. You can check what version you have through the command nrfjprog --version. If you have an older version, please upgrade to the newest version and try again. Remember to accept the J-Link install as well, for the latest J-Link drivers. The latest nRF Command Line Tools and J-Link driver support the latest DK revisions.

Let me know if the above does not work, so we can look further into the issue.

Regards,
Terje

[xhr0428]

DK version is 3.0.0, 2022.21

nRF command line tool is already 10.16.0, J-Link version is 7.66a

It still doesn't work

[tesc]

Hi,

I have seen some similar issues the first time connecting an nRF52840 DK version 3.0.0 to the computer, but not after giving it some time (probably for drivers to initialize properly.)

Regarding the --family option, if it is not supplied then nrfjprog should automatically detect the device family. Can you try without the --family option?

Do you get any output from the below command?

nrfjprog -i

Regards,
Terje

[mksth]

Hi, I have simmilar issue. I have USB connected my nRF52840 with my Windows 10 computer. The "Led 5" blinks quite fast. The board can't be discovered by my machine. I see that device manager doesn't reload after plugging / unplagging the board. I have tried with 5 cables, so I think I can exclude cable issue. I have installed:

- nrfjprog version: 10.24.2 external
- JLinkARM.dll version: 7.96f

My board:

- PCA10056 
- version number 3.0.0   2022.36

Any thoughts?

Update: I just bought 6th cable. The board started work!