diff --git a/src/widgets/atcoreinstancewidget.h b/src/widgets/atcoreinstancewidget.h
--- a/src/widgets/atcoreinstancewidget.h
+++ b/src/widgets/atcoreinstancewidget.h
@@ -94,6 +94,7 @@
     void initConnectsToAtCore();
     void stopPrint();
     QMap<QString, QVariant> readProfile();
+    void saveProfile();
     void pausePrint();
     void print();
     void updateSerialPort(QStringList ports);
diff --git a/src/widgets/atcoreinstancewidget.cpp b/src/widgets/atcoreinstancewidget.cpp
--- a/src/widgets/atcoreinstancewidget.cpp
+++ b/src/widgets/atcoreinstancewidget.cpp
@@ -401,6 +401,10 @@
         if (m_profileData["heatedBed"].toBool()) {
             connectBedTemperatureData(true);
         }
+        if (!m_core.availableFirmwarePlugins().contains(m_profileData["firmware"].toString())) {
+            m_profileData["firmware"] = m_core.firmwarePlugin()->name().toLower();
+            saveProfile();
+        }
     } break;
     case AtCore::DISCONNECTED: {
         if (m_connectionTimer->isActive()) {
@@ -590,6 +594,16 @@
     return data;
 }
 
+void AtCoreInstanceWidget::saveProfile()
+{
+    QString profile = m_comboProfile->currentText();
+    m_settings.beginGroup("Profiles");
+    m_settings.beginGroup(m_profileData["name"].toString());
+    m_settings.setValue(QStringLiteral("firmware"), m_profileData["firmware"]);
+    m_settings.endGroup();
+    m_settings.endGroup();
+}
+
 void AtCoreInstanceWidget::connectBedTemperatureData(bool connected)
 {
     if (connected) {