"Unspported Device" error while connecting nRF5340 to nRF Connect v3.6.1 - Programmer

[tim3in]

I am unable to connect the device to nRF Connect programmer. Following is the error. how to resolve it? what actually is the problem?

[Albrecht Markus Schellenberger]

Yes, no worries! It is just that the nrfjprog is a requirement when using the Programmer Tool, see the log below:

2021-05-27T10:53:35.806Z INFO Application data folder: C:\Users\<user>\AppData\Roaming\nrfconnect\pc-nrfconnect-programmer
2021-05-27T10:53:35.863Z INFO Using nrfjprog library 10.12.1, pc-nrfjprog-js 1.7.6
2021-05-27T10:53:35.867Z DEBUG App pc-nrfconnect-programmer v1.4.8 official
2021-05-27T10:53:35.868Z DEBUG App path: C:\Users\<user>\.nrfconnect-apps\node_modules\pc-nrfconnect-programmer
2021-05-27T10:53:35.868Z DEBUG nRFConnect 3.6.1 is supported by the app (^3.6.0)
2021-05-27T10:53:35.868Z DEBUG nRFConnect path: C:\Users\<user>\AppData\Local\Programs\nrfconnect\resources\app.asar
2021-05-27T10:53:35.868Z DEBUG HomeDir: C:\Users\<user>
2021-05-27T10:53:35.868Z DEBUG TmpDir: C:\Users\<user>\AppData\Local\Temp
2021-05-27T10:53:56.456Z INFO Using nrfjprog to communicate with target
2021-05-27T10:53:56.699Z INFO Using J-Link Software version 6.88
2021-05-27T10:53:57.099Z INFO Segger serial:  960105639
2021-05-27T10:53:57.099Z INFO Segger speed:  2000  kHz
2021-05-27T10:53:57.099Z INFO Segger version:  J-Link OB-K22-NordicSemi compiled Jan 21 2020 17:33:01
2021-05-27T10:53:57.100Z INFO Core probed: 960105639
2021-05-27T10:53:57.100Z INFO Core RAM: 512KiB
2021-05-27T10:53:57.100Z INFO Core ROM: 1024KiB in pages of 4KiB
2021-05-27T10:53:57.122Z INFO Device is closed without reset due to app protection
2021-05-27T10:53:57.122Z INFO Model: NRF5340_xxAA_ENGD.
2021-05-27T10:53:57.909Z INFO Segger serial:  960105639
2021-05-27T10:53:57.909Z INFO Segger speed:  2000  kHz
2021-05-27T10:53:57.909Z INFO Segger version:  J-Link OB-K22-NordicSemi compiled Jan 21 2020 17:33:01
2021-05-27T10:53:57.909Z INFO Core probed: 960105639:1
2021-05-27T10:53:57.909Z INFO Core RAM: 64KiB
2021-05-27T10:53:57.909Z INFO Core ROM: 256KiB in pages of 2KiB
2021-05-27T10:53:57.931Z INFO Device is closed without reset due to app protection
2021-05-27T10:53:58.199Z INFO Skipped reading, since at least one core has app readback protection

Ok, let’s see: J-Link seems to be ok, Command Line Tools as well.

Are you using the nRF5340 DK or a customised board?

[tim3in]

I am using nRF5340 DK board.