new nRF52840 V217.40 - 0.9.3 not being seen by Segger/nRFgoStudio

[ToasTer86]

Dear Nordic Devzone,

Just recently I purchased 2 additional nRF52840. In total I have 6 of them now; The first four all have the following numbers on the chip:

pca10056
0.9.2
2017.33
serial number

The 2 new one's have 2 other numbers on the chip:

pca10056
0.9.3
2017.40
serial number

The unfortunate interesting thing is that the 2 new one's are both not being recognized by nRFgo studio/Segger embedded studio. But Windows is showing them in my device manager, I can also see the J-link storage device.

So trying to troubleshoot this I went to the "device event page" in the device manager. Windows does tell me the drivers have been installed, with the exact same message as the 4 other nRF52840 that are working fine.

Driver Management concluded the process to install driver jlinkcdc.inf_amd64_8134dd13435f192f\jlinkcdc.inf for Device Instance ID USB\VID_1366&PID_1015&MI_00\6&1E3257C6&0&0000 with the following status: 0x0.

I tried uninstalling the device and reinstalling it, but it still does not show up in any of the tooling.

Do I need separate drivers for these new boards?

[ToasTer86]

Thanks for your answer Bjørn Kvaale, I am running this on Windows 10. Also have restarted my PC. Just tried it again, now I cant even see the J-Link storage device in computer. It is also not being seen in device manager anymore.

To verify the standard example is running on it. LED 1 is lit, if I press any of the BSP buttons the LED lights up corresponding to the BSP button pressed.

Is there any way I can reset the software on the board to put it back into like a factory default ? But there is no way I can do this from my host windows machine, it wont recognize the boards.

note: my other 4 boards are still working fine.