diff --git a/main.cpp b/main.cpp
index a925bc3..4da5633 100644
--- a/main.cpp
+++ b/main.cpp
@@ -5,14 +5,18 @@
 #include <QFileInfo>
 
 #include "message_handler.h"
-#include "interfaces.h"
 
+#include "interfaces.h"
 #include "DCPlugin/include/hwapi.h"
 
 #include <unistd.h>
 #include <thread>
 #include <memory>
 #include <QSharedMemory>
+#include <QRunnable>
+#include <QThreadPool>
+
+#include "utils.h"
 
 #ifdef PTU5
 #define SERIAL_PORT "ttymxc2"
@@ -20,35 +24,14 @@
 #define SERIAL_PORT "ttyUSB0"
 #endif
 
-static void updateBinary(std::unique_ptr<hwinf> hw,     // update d2dc*.bin
-                         char const *fileToSendToDC,
-                         char const *baudrate,
-                         char const *serialInterface) {
-    for (int i=0; i < 1;++i) {
-        qDebug() << "file to send to DC ..." << fileToSendToDC;
-        qDebug() << "baudrate ............." << baudrate;
-        qDebug() << "serial interface ....." << serialInterface;
-        hw->dc_updateDC(fileToSendToDC, baudrate, serialInterface);
-        std::this_thread::sleep_for(std::chrono::milliseconds(3000));
+class Work : public QRunnable {
+    Utils m_utils;
+public:
+    explicit Work(QString update_ctrl_file)  : m_utils(update_ctrl_file) {}
+    void run() {
+        m_utils.doUpdate();
     }
-    QCoreApplication::quit();
-}
-
-static void updatePrinterConf(std::unique_ptr<hwinf> hw, // update printer-file
-                              QVector<int> nrOfTemplate,
-                              QVector<QString> fileToSendToDC,
-                              QString br, QString serial) {
-    // for (int i = 0; i < 1; ++i) {
-    if (nrOfTemplate.size() == 1 && fileToSendToDC.size() == 1) {
-        hw->dc_updatePrinterTemplate(hwapi::FileTypeJson::PRINTER,
-                                     nrOfTemplate, fileToSendToDC,
-                                     br, serial);
-
-        // hw->dc_printTemplate(hwapi::FileTypeJson::PRINTER,
-        //                     nrOfTemplate, br, serial);
-    }
-    QCoreApplication::quit();
-}
+};
 
 // argv[1]: file to send to dc
 int main(int argc, char *argv[]) {
@@ -60,46 +43,15 @@ int main(int argc, char *argv[]) {
         //setDebugLevel(QtMsgType::QtDebugMsg);
     }
 
-    if (argc != 2) {
-        qCritical() << "Usage: " << argv[0] << "<file to send to dc>";
-        return -1;
+    QString update_ctrl_file = "/opt/app/tools/atbupdate/update_log.csv";
+    if (argc == 2) {
+        update_ctrl_file = argv[1];
     }
+    qCritical() << "Using" << update_ctrl_file << "as update logfile";
 
-    std::unique_ptr<hwinf> hw(new hwapi());
-    QFileInfo fileInfo(argv[1]);
-    QString fname(fileInfo.fileName());
-    int ret = 0;
-
-    if (fname.startsWith("dc") && fname.endsWith(".bin")) {
-        std::thread t(updateBinary, std::move(hw),
-                      fname.toStdString().c_str(), "115200", SERIAL_PORT);
-        ret = a.exec();
-        t.join();
-    } else {
-        if (fname.startsWith("DC2C_print") && fname.endsWith(".json")) {
-            qDebug() << "downloading" << fname << "to dc...";
-
-            QVector<QString> fnames;
-            QVector<int> templateIdx;
-
-            int const nrOfTemplate = fname.midRef(10, 2).toInt();
-            if (nrOfTemplate <= 0 && nrOfTemplate > 32) {
-                qCritical() << "wrong template number" << nrOfTemplate;
-                return -1;
-            }
-
-            fnames.append(fname);
-            templateIdx.append(nrOfTemplate);
-
-            std::thread t(updatePrinterConf, std::move(hw),
-                          templateIdx,
-                          fnames,
-                          "115200", SERIAL_PORT);
-
-            ret = a.exec();
-            t.join();
-        }
-    }
-
-    return ret;
+    Work work(update_ctrl_file);
+    work.setAutoDelete(false);
+    QThreadPool *threadPool = QThreadPool::globalInstance();
+    threadPool->start(&work);
+    return threadPool->waitForDone();
 }