diff --git a/update.cpp b/update.cpp
index fe025c0..e0e5bf2 100644
--- a/update.cpp
+++ b/update.cpp
@@ -6,6 +6,7 @@
 #include <QTemporaryFile>
 #include <QDebug>
 #include <QTextStream>
+#include <QRegularExpression>
 
 #include "interfaces.h"
 #include "DCPlugin/include/hwapi.h"
@@ -13,6 +14,7 @@
 #include <QSharedMemory>
 #include <QScopedPointer>
 #include <QProcess>
+#include <QDir>
 
 #define COLUMN_REQUEST      (0)
 #define COLUMN_NAME         (1)
@@ -26,6 +28,7 @@ void ScopedPointerCustomDeleter::cleanup(Update *update) {
 }
 
 Update::Update(QString update_ctrl_file,
+               QString workingDir,
                QObject *parent,
                hwinf *hw,
                char const *serialInterface,
@@ -36,9 +39,12 @@ Update::Update(QString update_ctrl_file,
     , m_baudrate(baudrate)
     , m_update_ctrl_file(update_ctrl_file)
     , m_update_ctrl_file_copy(update_ctrl_file + ".copy")
+    , m_workingDir(workingDir)
     , m_init(true)
     , m_delete(hw == nullptr) {
 
+    execUpdateScript();
+
     if (!m_update_ctrl_file.exists()) {
         qCritical() << "Update-file" << m_update_ctrl_file.fileName()
                     << "does not exist";
@@ -64,6 +70,34 @@ Update::Update(QString update_ctrl_file,
 Update::~Update() {
 }
 
+bool Update::execUpdateScript() {
+    // path of update-script 'update_psa'
+    QString update_psa("/opt/app/tools/atbupdate/update_psa --wdir ");
+    update_psa += m_workingDir;
+
+    //QStringList const params(QStringList() << "-c" << update_psa);
+
+    QScopedPointer<QProcess> p(new QProcess(this));
+    p->setProcessChannelMode(QProcess::MergedChannels);
+
+    p->start(update_psa);
+    if (p->waitForStarted(1000)) {
+        if (p->state() == QProcess::ProcessState::Running) {
+            if (p->waitForFinished(60000)) {
+                QString output = p->readAllStandardOutput().toStdString().c_str();
+                QStringList lst = output.split('\n');
+                for (int i = 0; i < lst.size(); ++i) {
+                    qDebug() << lst[i];
+                }
+                qInfo() << "EXECUTED" << update_psa;
+                return ((p->exitStatus() == QProcess::NormalExit)
+                     && (p->exitCode() == 0));
+            }
+        }
+    }
+    return false;
+}
+
 bool Update::updateBinary(char const *fileToSendToDC) {
     return m_hw->dc_updateDC(fileToSendToDC, m_baudrate, m_serialInterface);
 }
diff --git a/update.h b/update.h
new file mode 100644
index 0000000..83ee577
--- /dev/null
+++ b/update.h
@@ -0,0 +1,57 @@
+#ifndef UPDATE_H_INCLUDED
+#define UPDATE_H_INCLUDED
+
+#include <QObject>
+#include <QString>
+#include <QFile>
+
+#include "interfaces.h"
+#include "DCPlugin/include/hwapi.h"
+
+#ifdef PTU5
+#define SERIAL_PORT "ttymxc2"
+#else
+#define SERIAL_PORT "ttyUSB0"
+#endif
+
+class Update;
+struct ScopedPointerCustomDeleter {
+    static void cleanup(Update *pointer);
+};
+
+// TODO: check hardware compatibility
+// TODO: opkg commandos
+
+class Update : public QObject {
+    Q_OBJECT
+
+    QScopedPointer<hwinf> m_hw;
+    char const *m_serialInterface;
+    char const *m_baudrate;
+    QFile m_update_ctrl_file;
+    QFile m_update_ctrl_file_copy;
+    QString m_workingDir;
+
+    bool m_init;
+
+    bool updateBinary(char const *fileToSendToDC);
+    bool updatePrinterConf(int nrOfTemplate, char const *fileToSendToDC);
+    bool finishUpdate(bool finish);
+    QStringList getOpenLines();
+    QStringList split(QString line);
+    static constexpr QChar SEPARATOR = QChar(',');
+
+    bool execUpdateScript();
+public:
+    explicit Update(QString update_ctrl_file,
+                    QString workingDir = ".",
+                    QObject *parent = nullptr,
+                    hwinf *hw = nullptr,
+                    char const *serialInterface = SERIAL_PORT,
+                    char const *baudrate = "115200");
+    virtual ~Update() override;
+    bool doUpdate();
+
+    bool const m_delete;
+};
+#endif // UPDATE_H_INCLUDED