Cannot use NRF4340-DK as external debug probe for Thingy 53

[Wladymir Brborich]

Hi! I'm currently trying to flash custom firmware in the Thingy53. As suggested here I'm using the NRF5340-DK as an external debug probe. When I try to flash it with the programmer I get the following error:



I Have tried to run:

nrfjprog -v
nrfjprog version: 10.24.2 external
JLinkARM.dll version: 7.96t

nrfjprog --log --memrd 0x00FF0204 --n 8

[error] [ Client] - Encountered error -102: Command connect_to_emu_with_snr executed for 412 milliseconds with result -102
ERROR: Unable to connect to a debugger.
[error] [ Worker] - An unknown error.
ERROR: JLinkARM DLL reported an error. Try again. If error condition
ERROR: persists, run the same command again with argument --log, contact Nordic
ERROR: Semiconductor and provide the generated log.log file to them.

With no luck.

I have also tried to update Jlink to the latest version, and some intermediate versions as well with no luck.

I'm running macOS Sonoma 14.6.1

Here is a picture of my setup:

Any advice or help will be really apperciated!

[Wladymir Brborich]

HI,

Sure I'm going to try and get another cable over the weekend. Thanks a lot!

[Wladymir Brborich]

Hi,

Ok, another cable seems to work. Now I don't get the error, but I can't write to the thingy using VSCode when I flash a simple hello world program it seems to do it to the DK.

Best regards.

[Priyanka]

Hi,

Do you mean that when you try to write to the Thingy, it gets written to the DK? 

-Priyanka