diff --git a/QtScrcpy/device/device.cpp b/QtScrcpy/device/device.cpp
index 0482c09..0c2fec3 100644
--- a/QtScrcpy/device/device.cpp
+++ b/QtScrcpy/device/device.cpp
@@ -167,20 +167,19 @@ void Device::initSignals()
                 tipsType = tr("file transfer");
             }
             QString tips;
-            if (FileHandler::FAR_IS_RUNNING == processResult && m_videoForm) {
+            if (FileHandler::FAR_IS_RUNNING == processResult) {
                 tips = tr("wait current %1 to complete").arg(tipsType);
             }
-            if (FileHandler::FAR_SUCCESS_EXEC == processResult && m_videoForm) {
+            if (FileHandler::FAR_SUCCESS_EXEC == processResult) {
                 tips = tr("%1 complete, save in %2").arg(tipsType).arg(Config::getInstance().getPushFilePath());
             }
-            if (FileHandler::FAR_ERROR_EXEC == processResult && m_videoForm) {
+            if (FileHandler::FAR_ERROR_EXEC == processResult) {
                 tips = tr("%1 failed").arg(tipsType);
             }
             qInfo() << tips;
             if (m_controlState == GCS_CLIENT) {
                 return;
             }
-            //QMessageBox::information(m_videoForm, "QtScrcpy", tips, QMessageBox::Ok);
         });
     }
 
@@ -293,10 +292,10 @@ void Device::initSignals()
     }
 }
 
-void Device::connectDevice()
+bool Device::connectDevice()
 {
     if (!m_server) {
-        return;
+        return false;
     }
 
     // fix: macos cant recv finished signel, timer is ok
@@ -322,6 +321,8 @@ void Device::connectDevice()
         params.stayAwake = m_params.stayAwake;
         m_server->start(params);
     });
+
+    return true;
 }
 
 void Device::disconnectDevice()
diff --git a/QtScrcpy/device/device.h b/QtScrcpy/device/device.h
index 900d5cd..17dc81f 100644
--- a/QtScrcpy/device/device.h
+++ b/QtScrcpy/device/device.h
@@ -52,7 +52,7 @@ public:
     explicit Device(DeviceParams params, QObject *parent = nullptr);
     virtual ~Device();
 
-    void connectDevice();
+    bool connectDevice();
     void disconnectDevice();
 
     VideoForm *getVideoForm();
diff --git a/QtScrcpy/devicemanage/devicemanage.cpp b/QtScrcpy/devicemanage/devicemanage.cpp
index 69c1c6a..b733c7b 100644
--- a/QtScrcpy/devicemanage/devicemanage.cpp
+++ b/QtScrcpy/devicemanage/devicemanage.cpp
@@ -42,8 +42,11 @@ bool DeviceManage::connectDevice(Device::DeviceParams params)
     Device *device = new Device(params);
     connect(device, &Device::deviceDisconnected, this, &DeviceManage::onDeviceDisconnected);
     connect(device, &Device::controlStateChange, this, &DeviceManage::onControlStateChange);
+    if (!device->connectDevice()) {
+        delete device;
+        return false;
+    }
     m_devices[params.serial] = device;
-    device->connectDevice();
     if (!m_script.isEmpty()) {
         device->updateScript(m_script);
     }