Error: Flash Download failed - "Cortex-M4"

[Sunil@123]

Hello,

I am using nRF52 DK development board. I'm  having a problem  when  I load simple blink example . I am getting an error message  Error: Flash Download failed  -  "Cortex-M4"   . I am using SDK17 version. I have done the below setting. please help me out to solve this issue .

[Henry_Chou]

Have you done the flash configuration?...It should be NRF52.

like this

[Sunil@123]

YES I have Done that.

[Henry_Chou]

If everything is okay. You may try the NRF studio or NRF connect center programmer. Flash the code. If the tool chain is worked fine. Just make sure the keil C project file is okay. Sometimes, the project format issue case "Cortex-M4" fail.  For example, multi task project, one is for SD ,the other is for APP. But switch the wrong side.

[Sunil@123]

You tell me some proper way how to fix this problem.