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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>Modem upgrade failed</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/117566/modem-upgrade-failed</link><description>hi, 
 When verifying the modem upgrade, if the network type is set to support both Cat-M and NB (AT%XSYSTEMMODE=1,1,0,0), the actual network that connects is NB, and the modem upgrade will fail. However, when the network type is set to only support NB</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Fri, 10 Jan 2025 14:10:40 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/117566/modem-upgrade-failed" /><item><title>RE: Modem upgrade failed</title><link>https://devzone.nordicsemi.com/thread/517960?ContentTypeID=1</link><pubDate>Fri, 10 Jan 2025 14:10:40 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:5320ee49-9065-4596-a02b-b75e3ffe8e84</guid><dc:creator>Charlie</dc:creator><description>&lt;p&gt;It looks you are still testing with MFW 1.3.6. Could you please try using MFW 1.3.7 instead?&lt;/p&gt;
&lt;p&gt;If the issue persists, could you share both the modem trace and log files for the following two settings when running test? Unfortunately, I am unable to replicate the test on my side since both LTE-M and NB-IoT are available in my area.&lt;/p&gt;
&lt;ol&gt;
&lt;li&gt;&lt;code&gt;AT%XSYSTEMMODE=1,1,0,0&lt;/code&gt;&lt;/li&gt;
&lt;li&gt;&lt;code&gt;AT%XSYSTEMMODE=0,1,0,0&lt;/code&gt;&lt;/li&gt;
&lt;/ol&gt;
&lt;p&gt;Looking forward to your update.&lt;/p&gt;
&lt;p&gt;Best regards,&lt;/p&gt;
&lt;p&gt;Charlie&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Modem upgrade failed</title><link>https://devzone.nordicsemi.com/thread/516904?ContentTypeID=1</link><pubDate>Mon, 06 Jan 2025 07:45:06 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:a78e19d6-85bc-4399-8ee7-a4c81c5ee4a3</guid><dc:creator>Leo</dc:creator><description>&lt;p&gt;Hi,&lt;/p&gt;
&lt;p&gt;&amp;nbsp;The same issue still occurs when using NCS 2.9.0.&lt;/p&gt;
&lt;p&gt;&lt;img style="max-height:240px;max-width:320px;" alt=" " src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/ncs2.9.0.png" /&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Modem upgrade failed</title><link>https://devzone.nordicsemi.com/thread/516410?ContentTypeID=1</link><pubDate>Sat, 28 Dec 2024 07:50:28 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:5adf392a-42d3-42f6-bab0-6e1c49810742</guid><dc:creator>Charlie</dc:creator><description>&lt;p&gt;Hi,&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;Thank you for reporting this issue. However, I don’t believe it is specifically related to the &lt;code&gt;AT%XSYSTEMMODE&lt;/code&gt; command.&lt;/p&gt;
&lt;p&gt;From the logs, I noticed the devices are connected to two different cells, and neither cell appears to handle DNS reliably.&lt;/p&gt;
&lt;p&gt;To further investigate, could you try the following?&lt;/p&gt;
&lt;ol&gt;
&lt;li&gt;Test with &lt;strong&gt;NCS 2.9.0&lt;/strong&gt; using the &lt;strong&gt;Cellular: HTTP modem delta update&lt;/strong&gt; sample along with the latest&amp;nbsp;&lt;strong&gt;MFW 1.3.7&lt;/strong&gt;. There are several improvements and bug fixes since MFW 1.3.5 according to&amp;nbsp;&lt;a href="https://nsscprodmedia.blob.core.windows.net/prod/software-and-other-downloads/dev-kits/nrf9160-dk/release_notes_modemfirmware/mfw_nrf9160_1.3.7_release_notes.txt"&gt;release notes&lt;/a&gt;.&amp;nbsp;&lt;/li&gt;
&lt;li&gt;Perform tests in a different location to ensure both device connect to the same cell station for a proper comparison.&lt;/li&gt;
&lt;/ol&gt;
&lt;p&gt;Let me know the results or if you have additional observations.&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;Best regards,&lt;/p&gt;
&lt;p&gt;Charlie&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>