nRF board not getting detected

RE: nRF board not getting detected

Aadishri GS — Fri, 03 May 2019 12:16:37 GMT

Another useful related link:

https://devzone.nordicsemi.com/f/nordic-q-a/44089/nrf52832-entered-in-bootloader-mode

RE: nRF board not getting detected

Aadishri GS — Fri, 03 May 2019 09:45:07 GMT

This can happen if you press the reset button while power-cycling the board. It only affects the interface MCU(jlink lite), not the nRF chip.

RE: nRF board not getting detected

Aadishri GS — Mon, 29 Apr 2019 07:10:08 GMT

So basically it was just that the JLink bin was deleted. I am unable to understand where this binary was stored? and why did it get deleted when I probably incorrectly programmed the SD. Is this not a vulnerability?

I am basically worried about making my device unusable just due to the absence of a debug binary

RE: nRF board not getting detected

AndreasF — Wed, 17 Apr 2019 07:59:20 GMT

Hi.

That seems correct in order to recover your board.

I will verify that answer for that question, please create a new ticket if you have any other questions :-)

Best regards,

Andreas

RE: nRF board not getting detected

Aadishri GS — Wed, 17 Apr 2019 06:47:00 GMT

I understood that the J-Link must be the one that I am facing issues with

Answer by @Rajneesh:

1. Press button-4 + reset while power cycling. As soon as bootloader window pop-up download bin file from below link. Also I attached screenshot for reference.

https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF52840-DK/Download#infotabs

2, After download drag and drop bin file in pop-up window and immediately you can see power led start fast blinking. Then start device again by power switch and open nRFGoStudio and now you can see board detected. If it ask to update firmware then click yes and upgrade the firmware.

I recovered my board by following above steps. I am not sure this is right things to recover the board. So, please follow the steps be careful until Nordic can not confirm. I just shared the info to save someone time