diff --git a/DownloadDCFirmware/main.cpp b/DownloadDCFirmware/main.cpp
index 7dfe867..6c7e555 100644
--- a/DownloadDCFirmware/main.cpp
+++ b/DownloadDCFirmware/main.cpp
@@ -1,8 +1,53 @@
 #include <QtGlobal>
+#include <QCoreApplication>
+#include <QApplication>
+#include <QDebug>
+#include <QTimer>
+#include <QFileInfo>
+#include <QThread>
+
+#include "../common/include/message_handler.h"
+#include "mainwindow.h"
+
+#ifdef __linux__
+#include <sys/sysinfo.h>
+#endif
+
+#ifdef PTU5
+#define SERIAL_PORT "ttymxc2"
+#else
+#define SERIAL_PORT "ttyUSB0"
+#endif
 
 int main(int argc, char **argv) {
-    Q_UNUSED(argc);
-    Q_UNUSED(argv);
+    QByteArray const value = qgetenv("LC_ALL");
+    if (value != "C") {
+        qputenv("LC_ALL", "C");
+    }
+    // qputenv("XDG_RUNTIME_DIR", "/var/run/user/0");
 
-    return 0;
+    openlog("ATB-UPDATE-DC-FIRMWARE", LOG_PERROR | LOG_PID | LOG_CONS, LOG_USER);
+
+    QApplication a(argc, argv);
+    QApplication::setApplicationName("ATBUpdateTool");
+    QApplication::setApplicationVersion(APP_VERSION);
+
+    if (!messageHandlerInstalled()) { // change internal qt-QDebug-handling
+        atbInstallMessageHandler(atbDebugOutput);
+        setDebugLevel(LOG_NOTICE);
+    }
+
+    QThread::currentThread()->setObjectName("main thread");
+    qInfo() << "Main thread" << QThread::currentThreadId();
+
+    MainWindow mw;
+
+    mw.setWindowFlags(Qt::Window | Qt::FramelessWindowHint);
+    //mw.showFullScreen();
+
+    qCritical() << "SHOW";
+
+    mw.show();
+
+    return a.exec();
 }