I used vscode to develop nrf52832, and I opened and compiled the blinky routine smoothly according to the tutorial, but when I downloaded it, I was prompted to use nrfutil, although the prompt was successful, But the board didn't work properly。

[BigQi]

When I downloaded it, I was prompted as shown below   。

I downloaded it correctly via the west command ：west flash --runner jlink.

I have 3 questions now：

1.What causes the nrfutil error

2.How to change the relevant file so that when you click the flash button, it is downloaded via jlink。

3.Is there a tutorial on the debuge in this action?

Thank you and look forward to replying！

[SwRa]

Hello,

The error Error: no such option: --json occurs because you are using an outdated or incompatible version of nrfutil. You can download the latest nrfutil from the official Nordic website and follow the instructions to install additional commands as needed: nRF Util - nordicsemi.com This has also been explained in the migration guide here: Migration guide for nRF Connect SDK v3.0.0 

Please also take a look at this ticket: (+) Unable to Flash Blinky Sketch - Nordic Q&A - Nordic DevZone - Nordic DevZone 

Best Regards,

Swathy