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Reflashing J-Link on nRF51-DK

Crllo

Hi everyone,

sadly one of my nRF51-DK boards seems to be terribly bricked. During firmware update nRFgo Studio (on Windows) stopped responding. After a (long) while I restarted everything but then during another try I got an information that firmware update failed.

I've tried running jlink.exe and use advice from here: devzone.nordicsemi.com/.../ but I can see a message that "Failed to activate bootloader (timeout)".

nRFgo Studio recognizes nRF51-DK and if I wire up external nRF51822 chip to it it recognizes it. The problem is I can neither program any device using on board J-Link nor update its firmware.

Is there any possibility to reflash the bootloader using another nRF51-DK or I would need stand alone J-Link to do so?

Hope we can figure something out to fix it, thanks!

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    I connected debug out from another and working nrf51-dk to debug-in of the bricked one to check if nRF chip itself works. I've flashed one of the examples and it started broadcasting. Then I ran nRFgo Studio. It updated j-link firmware, crashed once more but after that everything is working fine.

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  • 0

    I connected debug out from another and working nrf51-dk to debug-in of the bricked one to check if nRF chip itself works. I've flashed one of the examples and it started broadcasting. Then I ran nRFgo Studio. It updated j-link firmware, crashed once more but after that everything is working fine.

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