PCA10031 is not detecting after &quot;J-Line j Firmware update&quot; failuerhttps://devzone.nordicsemi.com/f/nordic-q-a/28902/pca10031-is-not-detecting-after-j-line-j-firmware-update-failuerI am using the PCA10031 dongle. When I connected it to my pc (Windows10), I got a message in after starting Master Control Panel3.10.0 saying a firmware update for &quot;J-Line j Firmware update&quot; is available. When I clicked yes, it downloads something anden-USTelligent Community 13Wed, 03 Jan 2018 15:57:50 GMTRE: PCA10031 is not detecting after "J-Line j Firmware update" failuerhttps://devzone.nordicsemi.com/thread/114369?ContentTypeID=1Wed, 03 Jan 2018 15:57:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e780d265-87f9-4e3e-9f71-b9673a0f2757Bhavesh Shah<p>I downloaded J-Link OB-SAM3U128-V2-NordicSemi 170724.bin from <a href="https://www.nordicsemi.com/eng/Products/nRF51-Dongle">here.</a> After doing this, nRF51 dongle is not able to perform in sniffer.exe and also not able to perform DFU from Master Control Panel.</p><div style="clear:both;"></div>RE: PCA10031 is not detecting after "J-Line j Firmware update" failuerhttps://devzone.nordicsemi.com/thread/114368?ContentTypeID=1Tue, 02 Jan 2018 15:01:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1d3f7350-0ff3-4fc9-ad0d-539473159945Bhavesh Shah<p>Problem resolved after drag and dropping J-Link OB-SAM3U128-V2-NordicSemi 170724.bin file in BOOTLOADER drive. Let it copy properly. and re-powering the dongle did the trick.</p><div style="clear:both;"></div>