nRF52 can't be found in nRFgo Studio

[philp]

Hi Everyone,

I've just got the nRF52 dk, I'm currently using Keli 5 and would like to compile the blinky example into the nRF52 dk.

When I recompile the example code, it gives me the "no J-Link error" as shown below.

I've read through the forum and blog, and have done the following:

1. Installed the Segger drives,

2. Reinstalled the ST-link drivers

3. Installed the J-link drivers

4. Installed the nRFgo Studio

Currently I'm stuck trying to flush my nRF52's SoftDevice, when I tried to flush the nRF52 dk using nRFgo studio by following the following blog (https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/step-by-step-guide-to-setup-and-start-developemt-w).  nRFgo cannot found and say no boards is connected (as shown in picture below), despite my nRF52 is connected to my computer and turned on.

. 

I don't know what else should I do, this is getting frustrating.  and tutorials isn't too user friendly for newbies like myself.  please help

[AndreasF]

Hi.

Can you try the following:

1. Find a new USB cable or check that your cable is OK.

2. Download this file: J-Link OB-SAM3U128-V2-NordicSemi 170724.bin

3. Put the device in BOOTLOADER mode by holding button IF BOOT/RESET down, and turning power OFF, then turning power ON.

4. Have the file ready to be dragged into the BOOTLOADER folder like this:

5. Turn the power OFF, then turn the power ON.

Does this fix the problem?

If not, please try/confirm the following:

1. Does the device show up in Device Manager on your computer? Please try to connect and disconnect the kit a few times. It might show up with unexpected names.
2. Have you tried a different USB cable? Faulty cables are surprisingly often the problem.
3. Have you tried using a different computer? If it works on a different computer we know that the kit is not broken and that it is probably a driver issue.
4. Have you measured the supply voltage on the kit? It should be somewhere between 2.8V-3.3V. If it isn't, then the hardware is probably broken.
5. Have you made sure that you are using the latest J-Link driver version?
6. Have you tried this guide?
7. Are the switches on your board in the correct place? SW9 set to VDD, SW6 set to DEFAULT. Have you cut any solder bridges?

Note also that nRFgo studio is no longer supported, please switch to nRF Connect for Desktop and the nRF Connect Programmer.

Best regards,

Andreas