No Cortex M SW Device found

Hello,

Again I am try to get this to work

DA14580 Serial Port Service reference application

I am looking at the manual UM-B-038 Section 8 Hardware setup for Basic DK

From what I understand --

1. I need to remove all the jumpers from J14
2.我需要连接一个FTDI出租车le as shown to the board
3. The other end of the FTDI cable will connect to a USB port
4. I still need the other USB for power.

Problem when I start and stop debugging is that I get the error message "No Cortex M SW Device found"

Thanks.

Saleem