I can't update the J-Link OB firmware (nRF52840-DK)

[Maxime]

Hello,

I use an nRF52840 that I program with Segger Embedded Studio. I am using J-Link driver version 6.44f.

When I want to connect to J-Link I get the following message:

" A new firmware verison is available for the connected emulator. Do you want to update to the latest firmware version ? 
NOTE: Updating to the latest firmware version is strongly recommended.
New features / improvements may not be available without a firmware update "

If I choose to do the update, he tries to do it and this is what I get:

New firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Jan 7 2019 14:07:15
Current firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Nov 14 2016 16:58:29
Starting bootloader...
Waiting for emulator to detach... OK after 183ms.
Waiting for emulator to attach... OK after 312ms.
ERROR: Firmware update failed.

In addition, the system freezes completely and I have to close it and turn it back on again. I tried to put the new firmware version

I tried to put the new firmware version (available here: https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF52-DK/Download#infotabs) by starting in bootloader mode, but I couldn't see my nRF52 at all after that (even via the USB port). I then put back an old version and this time I went back to the previous point with the same problems (can't update the firmware).

Do you have a solution for me?

Thank you in advance and best regards!

Maxime

[Amanda Hsieh]

Hi, 

Sorry for the delay because most of my colleagues are just back from the Easter holidays as me. 

I think you might have put your nRF52840 DK in Bootloader mode, can you check if the board shows up as "BOOTLOADER", and if it does, copy this file(J-Link OB-SAM3U128-V2-NordicSemi 170724.bin )to the "BOOTLOADER"folder, turn the power of the board off and on, and it should work.

Best regards,

Amanda

[Maxime]

Hello, thank you for your answer.

I realized that. That's actually what I wrote here:

I tried to put the new firmware version (available here: https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF52-DK/Download#infotabs) by starting in bootloader mode, but I couldn't see my nRF52 at all after that (even via the USB port). I then put back an old version and this time I went back to the previous point with the same problems (can't update the firmware).

So I managed to copy the.bin file into the BOOTLOADER, but after that I couldn't see my nRF52 in normal mode at all (I couldn't see the COM port anymore)... So I put the old version back in the BOOTLOADER and I was at the same point as before.

[Amanda Hsieh]

Hi,

 

1. Which revision of the DK do you have?

2. Could you try to use J-link v6.40?

3. Can you please try method 2, 3, and 4 here: My nRF52/nRF51 DK kit doesn't work.

Please let me know these can help you or not. Thanks.

-Amanda