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<?xml-stylesheet type="text/xsl" href="https://devzone.nordicsemi.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Unable to flash nRF52840dk using west flash</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/86936/unable-to-flash-nrf52840dk-using-west-flash</link><description>Hi there, 
 A couple of weeks ago, I&amp;#39;m facing the issue that my nRF52840DK board is not visible and led5 is flashing rapidly. I reflashed the bootloader, j-link-ob-sam3u128-v2-nordicsemi-170724 , on the board by following the instruction here https:/</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Wed, 20 Apr 2022 11:11:33 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/86936/unable-to-flash-nrf52840dk-using-west-flash" /><item><title>RE: Unable to flash nRF52840dk using west flash</title><link>https://devzone.nordicsemi.com/thread/363876?ContentTypeID=1</link><pubDate>Wed, 20 Apr 2022 11:11:33 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:092867ff-7b48-4036-ba7c-c1bbffb74504</guid><dc:creator>Sigurd Hellesvik</dc:creator><description>[quote user="noobsplzwin"]&lt;br /&gt;With the above being said, if I choose not to update the firmware in J-link commander, select no in the picture below.&lt;br /&gt; I am able to flash the program properly.[/quote]
&lt;p&gt;Just to be clear:&lt;/p&gt;
&lt;p&gt;So you do are able to use the nRF52840DK with this?&lt;/p&gt;
&lt;p&gt;Regards,&lt;br /&gt;Sigurd Hellesvik&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Unable to flash nRF52840dk using west flash</title><link>https://devzone.nordicsemi.com/thread/363734?ContentTypeID=1</link><pubDate>Wed, 20 Apr 2022 02:13:09 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:9e662370-11fd-4978-8d11-2258883c68c9</guid><dc:creator>Huizhe Zheng</dc:creator><description>&lt;p&gt;Sorry, the link&amp;nbsp;in the above comment&amp;nbsp;is not correct. The firmware I&amp;#39;m using is downloaded here,&amp;nbsp;&lt;a href="https://www.nordicsemi.com/-/media/Software-and-other-downloads/Dev-Kits/nRF5x-DK-files/J-Link-OB-SAM3U128-V2-NordicSemi-170724.bin"&gt;www.nordicsemi.com/.../J-Link-OB-SAM3U128-V2-NordicSemi-170724.bin&lt;/a&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Unable to flash nRF52840dk using west flash</title><link>https://devzone.nordicsemi.com/thread/363733?ContentTypeID=1</link><pubDate>Wed, 20 Apr 2022 02:04:40 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:54835ab5-6ef0-4843-8c2d-30467e7e7bd4</guid><dc:creator>Huizhe Zheng</dc:creator><description>&lt;p&gt;Hi Sigurd,&lt;/p&gt;
&lt;p&gt;Thanks for your response! &lt;br /&gt;I am not sure where to find the version of the nRF52840DK. The sticker on the development board shows PCA10056&amp;nbsp; &amp;nbsp; &amp;nbsp; 2.0.1&amp;nbsp; &amp;nbsp; &amp;nbsp; 2021.10&amp;nbsp; &amp;nbsp; &amp;nbsp;683083855&lt;/p&gt;
&lt;p&gt;It still shows the same error after. I am not sure why Jlink keeps recognizing the firmware downloaded from&amp;nbsp;&lt;a href="https://devzone.nordicsemi.com/f/nordic-q-a/8144/i-can-t-update-the-j-link-ob-firmware-nrf51-dk"&gt;https://devzone.nordicsemi.com/f/nordic-q-a/8144/i-can-t-update-the-j-link-ob-firmware-nrf51-dk&lt;/a&gt;&amp;nbsp;is compiled in 2017.&amp;nbsp;&lt;br /&gt;&lt;br /&gt;&lt;img src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1650412520926v2.png" alt=" " /&gt;&lt;br /&gt;&lt;br /&gt;With the above being said, if I choose not to update the firmware in J-link commander, select no in the picture below.&lt;br /&gt; I am able to flash the program properly.&lt;/p&gt;
&lt;p&gt;&lt;img src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1650419864079v1.png" alt=" " /&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Unable to flash nRF52840dk using west flash</title><link>https://devzone.nordicsemi.com/thread/363565?ContentTypeID=1</link><pubDate>Tue, 19 Apr 2022 12:14:40 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:f830600a-be68-48fc-a3b5-874d4b178188</guid><dc:creator>Sigurd Hellesvik</dc:creator><description>&lt;p&gt;Hi Leo&lt;/p&gt;
&lt;p&gt;Which version of the nRF52840DK do you have?&lt;/p&gt;
&lt;p&gt;Are you able to enter bootloader mode again?&lt;br /&gt;Try to update the bootloader once more the same way. Give the device a minute before re-powering it (plug it out and back in. Make sure no battery is connected) after the new bootloader has been programmed.&lt;/p&gt;
&lt;p&gt;Does it still show the same error after?&lt;/p&gt;
&lt;p&gt;Regards,&lt;br /&gt;Sigurd Hellesvik&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Unable to flash nRF52840dk using west flash</title><link>https://devzone.nordicsemi.com/thread/363229?ContentTypeID=1</link><pubDate>Wed, 13 Apr 2022 15:16:39 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:4ae32805-56f4-49f0-bc5d-3a81fa2ebd16</guid><dc:creator>Huizhe Zheng</dc:creator><description>&lt;p&gt;&lt;a href="https://devzone.nordicsemi.com/cfs-file/__key/communityserver-discussions-components-files/4/6470.log.log"&gt;devzone.nordicsemi.com/.../6470.log.log&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;Here is the error log for the reference&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>