Hi, I'm writing this because of nRF52840 booting error
I got this product today and It worked well, but after I downloaded one of the example's ~DEBUG.jlink file to the kit, I could not reach to the kit via PC anymore
The jlink file was "proximity example file" and my phone still can detect the nRF52840 kit and connect to it (and works very well)
HOWEVER, the PC could not reach to the board and so that could not download or use other programs
Could anyone help me??? I tried
but any of them works for my case
If you are still able to detect the nRF with nRF Connect, it suggests that it is the programming chip that is corrupted. You say that you have tried the steps in the links. What happens when you hold the button "IF BOOT/RESET" while you power off and on the PDK? Does it appear as BOOTLOADER on your PC?
If it does, can you try to drag'n'drop the attached file into the BOOTLOADER device (e.g. in windows explorer).
After this, the "LED5" next to the programming chip should start to blink. When it does, power the board on and off, without holding any buttons. Does it appear on your PC then?
If this does not work, where in the process does your board differ from the description above?
You do use the USB port on the short side of the DK, and not the long side?
J-Link OB-SAM3U128-V2-NordicSemi 170724.bin