https://devzone.nordicsemi.com/f/nordic-q-a/114923/nrfjprogWhen I was making the upgrade package, I encountered a problem, and there was no problem in making only one upgrade package. It is also possible to make protocol stacks, applications, and bootloader files that are merged together. There&#39;s a problemen-USTelligent Community 13Tue, 24 Sep 2024 09:01:39 GMThttps://devzone.nordicsemi.com/thread/503525?ContentTypeID=1Tue, 24 Sep 2024 09:01:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6570e5b4-468a-49ae-bdda-ee34df47cf11Priyanka<p>Hi,</p> <p>Could you try <strong>nrfjprog --ids</strong> and <strong>nrfjprog --deviceversion</strong> and attach what you see?</p> <p>Also, have you connected multiple devices to the PC?</p> [quote user="liuyanfeng"]Is this problem related to these two Jlinks？[/quote] <p>This should not be a problem, but maybe just try installing one latest version.</p> <p>-Priyanka</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/503399?ContentTypeID=1Mon, 23 Sep 2024 12:47:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:482a9664-49d3-48e4-9ec4-2297f196004aliuyanfeng<p><span style="font-size:150%;">I installed two jlink, one 6.88 and the other 7.94e</span><br /><span style="font-size:150%;">Is this problem related to these two Jlinks？</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/503396?ContentTypeID=1Mon, 23 Sep 2024 12:38:45 GMT137ad170-7792-4731-bb38-c0d22fbe4515:51600705-d2ee-4991-8a52-a085130ed463Priyanka<p>Hi,</p> <p>What version of the J-Link do you have installed?</p> <p>-Priyanka</p><div style="clear:both;"></div>