I have open a brand new nRF52 Development Kit. It is not recognise by the nRFgo Studio. I have tried the trick you mention on this thread:
without lack. I did flash the lastest nRF5x-OB-JLink-IF version 170724. After this trick the dev kit is updated to the latest segger firmware v22g but the recovery still gives an error. 'Recovery Failed. Unknown error'.
Any help most welcome
1. Make sure that you have nRF5x Command Line Tools installed
2. Download J-Link v6.22
(you can check your version with going to "cmd" and use the command "nrfjprog -v")
I would also recommend you to go through this list.
Try to open "j-link configurator" and see if your board is recognized there.
If nothing works, run the cmd "nrfjprog.exe --recover --log" and post the log here.
I have tried all that without luck
- I have the latest nrF5x Command Line Tools (v 9.7.3).
- The segger version you have indicated (J-Link v 6.22g) although the latest is 6.32g
- I have tried all that suggested on the list. Opening the J-Link Commander will not help neither. Please see image attached
It cannot establish connection with the micro.
I have just rip off the seal of this nRF52 development kit. No chance to flash anything on it.
What is wrong?
Thanks for your help.
Just to complete the info on your last line:
nrfjprog.exe --recover --log will return the following
Just nrfjprog.exe --recover returns the following
What operating system are you working on?
If you go into "J-Link Configurator" what do you see? (could you provide a screenshot?)
You did this step correct? Hold in the "IF BOOT/RESET" button while Turning on the kit? It should then show up as a Removable Storage Device named "BOOTLOADER" and LD5 should blink 1 sec. intervals. Then you can drag-and-drop this file onto the storage device to reprogram the JLINK firmware (LD5 Blinks fast). Wait 10 sec. then turn off the DK and turn it on.
Then use 'cmd' with the command "nrfjprog --recover --log"
What happens when you build and run a SES project from the SDK?
Sure that thi is a recent version? Should moan about NRF52 and not NRF51 - which uses a differen unlocking procedure AFAIK.