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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>BLE ISO channel send error when updating from 3.0.2 to 3.1.0</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/123825/ble-iso-channel-send-error-when-updating-from-3-0-2-to-3-1-0</link><description>Hi, We are getting packets a count mismatch error immediately after first successful bt_iso_chan_send() call, preventing ISO communication that worked in 3.0.2. This is our settings: 
 static struct bt_iso_chan_io_qos cen_iso_tx = { .sdu = 155, .phy </description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Thu, 21 Aug 2025 06:26:50 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/123825/ble-iso-channel-send-error-when-updating-from-3-0-2-to-3-1-0" /><item><title>RE: BLE ISO channel send error when updating from 3.0.2 to 3.1.0</title><link>https://devzone.nordicsemi.com/thread/546285?ContentTypeID=1</link><pubDate>Thu, 21 Aug 2025 06:26:50 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:727a336f-d1b4-4511-bcd9-da2bc8e3d2ce</guid><dc:creator>Simonr</dc:creator><description>&lt;p&gt;Hi James&lt;/p&gt;
&lt;p&gt;Is your project based on one of our SDK sample projects? Do you have the error log message you see from the SDK? Have you followed the&lt;a href="https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/releases_and_maturity/migration/migration_guide_3.1.html"&gt; v3.1.0 Migration guide&lt;/a&gt; when moving from v3.0.2 to 3.1.0?&lt;/p&gt;
&lt;p&gt;Best regards,&lt;/p&gt;
&lt;p&gt;Simon&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>