diff --git a/Src/updaterdialog.cpp b/Src/updaterdialog.cpp
index e750e1b..444ff0e 100644
--- a/Src/updaterdialog.cpp
+++ b/Src/updaterdialog.cpp
@@ -28,6 +28,7 @@ UpdaterDialog::UpdaterDialog(QWidget *parent) :
     ui->setupUi(this);
     this->setWindowTitle("Updater");
     ui->btn_update->setEnabled(0);
+    ui->btn_update_patch->setEnabled(0);
 
     m_startTime = 0;
 
@@ -44,6 +45,50 @@ UpdaterDialog::UpdaterDialog(QWidget *parent) :
 //    ui->show->appendPlainText(APPVERSION);
 //    ui->show->appendPlainText(APPDATE);
 //    ui->show->appendPlainText(MODIFYCNT);
+
+    m_pDownloader = new Downloader(this);
+
+    connect(m_pDownloader, &Downloader::doShowInfo, this, [&](const QString & s)
+    {
+        showStatus(s);
+    });
+
+    connect(m_pDownloader, &Downloader::onError, this, [&](QNetworkReply::NetworkError e)
+    {
+        QMetaEnum metaEnum = QMetaEnum::fromType<QNetworkReply::NetworkError>();
+        QString str = QString(metaEnum.valueToKey(e));
+        ui->show->appendPlainText(str);
+    });
+
+    connect(m_pDownloader, &Downloader::doFinished, this, [&]()
+    {
+        uint _end_time = QDateTime::currentSecsSinceEpoch();
+        uint _total_time = _end_time - m_startTime;
+        ui->label_3->setText("total time: " + QString::number(_total_time, 'g', 3) +
+                             "s    average speed: " + QString::number((m_totalSize / 1024.0 / _total_time), 'g', 3) + "kb/s");
+        ui->show->appendPlainText("download finished");
+        onDownloadFinished();
+    });
+
+    connect(m_pDownloader, &Downloader::doProgress, this, [&](quint64 received, quint64 total)
+    {
+        m_totalSize = total;
+        if (total > 0)
+        {
+            ui->progressBar->setMinimum(0);
+            ui->progressBar->setMaximum(100);
+            ui->progressBar->setValue((received * 100) / total);
+            calculateSizes(received, total);
+            calculateTimeRemaining(received, total);
+        }
+        else
+        {
+            ui->progressBar->setMinimum(0);
+            ui->progressBar->setMaximum(0);
+            ui->progressBar->setValue(-1);
+            ui->show->appendPlainText(tr("Downloading Updates") + "...");
+        }
+    });
 }
 
 UpdaterDialog::~UpdaterDialog()
@@ -67,6 +112,7 @@ void UpdaterDialog::on_btn_check_clicked()
     }
     ui->show->clear();
     ui->btn_update->setEnabled(0);
+    ui->btn_update_patch->setEnabled(0);
     //version
     m_version = ui->versionInput->text();
 
@@ -201,6 +247,7 @@ void UpdaterDialog::onCheckReply(QNetworkReply *reply)
                    + tr("\nclick cancel button to quit"));
     }
     ui->btn_update->setEnabled(1);
+    ui->btn_update_patch->setEnabled(1);
 }
 
 void UpdaterDialog::calculateSizes(qint64 received, qint64 total)
@@ -291,53 +338,6 @@ void UpdaterDialog::calculateTimeRemaining(qint64 received, qint64 total)
 
 void UpdaterDialog::on_btn_update_clicked()
 {
-    if(!m_pDownloader)
-    {
-        m_pDownloader = new Downloader(this);
-
-        connect(m_pDownloader, &Downloader::doShowInfo, this, [&](const QString & s)
-        {
-            showStatus(s);
-        });
-
-        connect(m_pDownloader, &Downloader::onError, this, [&](QNetworkReply::NetworkError e)
-        {
-            QMetaEnum metaEnum = QMetaEnum::fromType<QNetworkReply::NetworkError>();
-            QString str = QString(metaEnum.valueToKey(e));
-            ui->show->appendPlainText(str);
-        });
-
-        connect(m_pDownloader, &Downloader::doFinished, this, [&]()
-        {
-            uint _end_time = QDateTime::currentSecsSinceEpoch();
-            uint _total_time = _end_time - m_startTime;
-            ui->label_3->setText("total time: " + QString::number(_total_time, 'g', 3) +
-                                 "s    average speed: " + QString::number((m_totalSize / 1024.0 / _total_time), 'g', 3) + "kb/s");
-            ui->show->appendPlainText("download finished");
-            onDownloadFinished();
-        });
-
-        connect(m_pDownloader, &Downloader::doProgress, this, [&](quint64 received, quint64 total)
-        {
-            m_totalSize = total;
-            if (total > 0)
-            {
-                ui->progressBar->setMinimum(0);
-                ui->progressBar->setMaximum(100);
-                ui->progressBar->setValue((received * 100) / total);
-                calculateSizes(received, total);
-                calculateTimeRemaining(received, total);
-            }
-            else
-            {
-                ui->progressBar->setMinimum(0);
-                ui->progressBar->setMaximum(0);
-                ui->progressBar->setValue(-1);
-                ui->show->appendPlainText(tr("Downloading Updates") + "...");
-            }
-        });
-    }
-
     m_pDownloader->setFileName(m_fileName);
     m_startTime = QDateTime::currentDateTime().toSecsSinceEpoch();
 
@@ -391,3 +391,13 @@ void UpdaterDialog::onDownloadFinished()
         QApplication::quit();
     }
 }
+
+void UpdaterDialog::on_btn_update_patch_clicked()
+{
+    m_pDownloader->setFileName(m_fileName);
+    m_startTime = QDateTime::currentDateTime().toSecsSinceEpoch();
+    m_bDownloadFullExe = false;
+    QString _url = m_patchUrl;
+    m_pDownloader->startDownload(_url);
+}
+
diff --git a/Src/updaterdialog.h b/Src/updaterdialog.h
index 69ce751..99562f3 100644
--- a/Src/updaterdialog.h
+++ b/Src/updaterdialog.h
@@ -42,6 +42,8 @@ private slots:
 
     void onDownloadFinished();
 
+    void on_btn_update_patch_clicked();
+
 private:
     Ui::UpdaterDialog *ui;
 
diff --git a/Src/updaterdialog.ui b/Src/updaterdialog.ui
index 120e178..d5c088f 100644
--- a/Src/updaterdialog.ui
+++ b/Src/updaterdialog.ui
@@ -168,7 +168,13 @@
       </layout>
      </item>
      <item>
-      <widget class="QPlainTextEdit" name="show"/>
+      <widget class="QPlainTextEdit" name="show">
+       <property name="font">
+        <font>
+         <pointsize>14</pointsize>
+        </font>
+       </property>
+      </widget>
      </item>
      <item>
       <widget class="QLabel" name="label_2">
@@ -247,6 +253,26 @@
          </property>
         </widget>
        </item>
+       <item>
+        <widget class="QPushButton" name="btn_update_patch">
+         <property name="sizePolicy">
+          <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+           <horstretch>0</horstretch>
+           <verstretch>0</verstretch>
+          </sizepolicy>
+         </property>
+         <property name="font">
+          <font>
+           <family>Times New Roman</family>
+           <pointsize>12</pointsize>
+           <bold>true</bold>
+          </font>
+         </property>
+         <property name="text">
+          <string>update-patch</string>
+         </property>
+        </widget>
+       </item>
        <item>
         <widget class="QPushButton" name="btn_update">
          <property name="sizePolicy">
@@ -263,7 +289,7 @@
           </font>
          </property>
          <property name="text">
-          <string>update</string>
+          <string>update-full</string>
          </property>
         </widget>
        </item>