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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>Upload of Bootloader fails</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/72034/upload-of-bootloader-fails</link><description>We are trying to upload Bootloader only, but it fails with &amp;#39;Error 5: FW version check failed&amp;#39;. Please view log / pictures. 
 We have tried to change the bootloader version but it does not help. 
 What else could be the reason for the error?</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Thu, 25 Feb 2021 15:13:58 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/72034/upload-of-bootloader-fails" /><item><title>RE: Upload of Bootloader fails</title><link>https://devzone.nordicsemi.com/thread/296337?ContentTypeID=1</link><pubDate>Thu, 25 Feb 2021 15:13:58 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:96d75011-6c2a-4cad-8e11-80e390d5ab56</guid><dc:creator>Vidar Berg</dc:creator><description>&lt;p&gt;No problem. Thank you for confirming the solution!&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Upload of Bootloader fails</title><link>https://devzone.nordicsemi.com/thread/296334?ContentTypeID=1</link><pubDate>Thu, 25 Feb 2021 15:12:38 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:a5be1826-487a-46e2-af94-029ad53b92d5</guid><dc:creator>Jenzo</dc:creator><description>&lt;p&gt;OK. Problem solved. I chose the same No as previous.&amp;nbsp;&lt;/p&gt;
&lt;p&gt;My bad.&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;Thanks a lot for a quick answer!!&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Upload of Bootloader fails</title><link>https://devzone.nordicsemi.com/thread/296312?ContentTypeID=1</link><pubDate>Thu, 25 Feb 2021 14:37:56 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:511b2d5a-8c23-4f3c-9a3e-b2073981b32c</guid><dc:creator>Vidar Berg</dc:creator><description>&lt;p&gt;I don&amp;#39;t see any other reasons for this error. Have you verified that the new bootloader update&amp;nbsp;actually has a higher version number?&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Upload of Bootloader fails</title><link>https://devzone.nordicsemi.com/thread/296310?ContentTypeID=1</link><pubDate>Thu, 25 Feb 2021 14:35:59 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:786f2b21-6672-4e04-84f3-60a31aa9046a</guid><dc:creator>Jenzo</dc:creator><description>&lt;p&gt;Yes, that is correct. But&amp;nbsp;can this be the only cause for the error?&amp;nbsp;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Upload of Bootloader fails</title><link>https://devzone.nordicsemi.com/thread/296266?ContentTypeID=1</link><pubDate>Thu, 25 Feb 2021 13:11:08 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:96ca2f30-e86d-4b51-b7bf-98e3b4b2c71b</guid><dc:creator>Vidar Berg</dc:creator><description>&lt;p&gt;Hi,&lt;/p&gt;
&lt;p&gt;Do you know what bootloader version you currently have on the device? If not, is it possible to attach a debugger to this device and read the version number from flash?&lt;/p&gt;
&lt;p&gt;The new bootloader must have a version number that is higher than the previous version. Otherwise you will get the FW version error shown in the log you posted above.&lt;/p&gt;
&lt;p&gt;Best regards,&lt;/p&gt;
&lt;p&gt;Vidar&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>