Nordic Dongle not working after flashing with MCP

[mrploplo]

Hello,

My 10031 dongle worked perfectly up to the point where I flashed it using MCP. I was able to run simple programs such as blinky, but now I cannot revert to the previous state. Whenever I try to download new code to it, I get the 'Error: Flash Download failed - "Cortex-M0"' error.

What can I do or what could I look at?

Thank you very much.

[MartinBL]

Hi,

What was the previous state?

My first guess is that you are trying to load your application on top of a SoftDevice already programmed to your device. See this thread.

Otherwise it might be a problem with your programming method, drivers or something like this.

Also make sure you browse devzone for your particular error message. It is a pretty common one.