What we do if there is no soft device for some example program?

Question

Sir, 
 In some examples I found some of the example programs does not contains Soft Device. What to do??? 
 And when I Flashed the main file alone it shows some errors.

Einar Thorsrud · Accepted Answer

Aha, that was a very important piece of information. Everything we have discussed so far assumes that you use a J-Link programmer of some sort. I do not have any experience with ST-Link nor is it explicitly supported by Nordic, but it should be possible to use it. 
 I assume you have configured the Keil project properly for using the ST-Link debugger? If you still cannot get it to work then I recommend searching this forum for threads about using ST-Link with the nRF52840 .The best would probably be to obtain a J-Link (for instance in the form of a nRF52840 DK), as all nRF tools are based on it.

What we do if there is no soft device for some example program?

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