diff --git a/update.cpp b/update.cpp
index f8cf320..98bca1f 100644
--- a/update.cpp
+++ b/update.cpp
@@ -361,9 +361,14 @@ bool Update::openSerial(int br, QString baudrate, QString comPort) const {
 }
 
 void Update::closeSerial() const {
+    qInfo() << "CLOSED SERIAL" << m_baudrate << m_serialInterface;
     m_hw->dc_closeSerial();
 }
 
+bool Update::isSerialOpen() const {
+    return m_hw->dc_isPortOpen();
+}
+
 bool Update::resetDeviceController() const {
     qDebug() << "resetting device controller...";
     m_hw->bl_rebootDC();