Error when i try to erase NRF52

[F.lemke]

Hi everyone,

I'm totally newbie, and was following the tutorial devzone.nordicsemi.com/.../. (I have two board, PCA10028 with a nRF51 and PCA10040 with a nRF52)

and i try to run the blinky code example with the PCA10028, it's working fine. but not with the PCA10040.

I try to erase the device by using this command : nrfjprog --family nRF52 --eraseall --log and here is the "unexpected issue" :( I sent you the log.log file

and the cmd error :

thanks for your support

[F.lemke]

Hi,

With and new computer, new cable, still doesn't work.

Here is the J-link version (with nrfjprog -v)

C:\Users\Franck>nrfjprog -v
nrfjprog version: 9.6.0
JLinkARM.dll version: 6.16a

When i launch J-Link commander i got this :

SEGGER J-Link Commander V6.16a (Compiled Jun  6 2017 12:43:26)
DLL version V6.16a, compiled Jun  6 2017 12:42:51

Connecting to J-Link via USB...O.K.
Firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Mar  2 2017 12:22:13
Hardware version: V1.00
S/N: 682961230
VTref = 3.300V

I download the file, and when i drag/drop into removable drive, a Fail.txt appears

Error while connecting to CPU

On the hardware, the pin "VDD" and "VTC" are connected together (on P20 connector)