diff --git a/UpdatePTUDevCtrl/mainwindow.cpp b/UpdatePTUDevCtrl/mainwindow.cpp
index 4ddd0c6..fb2323e 100644
--- a/UpdatePTUDevCtrl/mainwindow.cpp
+++ b/UpdatePTUDevCtrl/mainwindow.cpp
@@ -3,6 +3,7 @@
 #include "worker.h"
 #include "utils.h"
 #include "utils_internal.h"
+#include "log_line_entry.h"
 #include "progress_event.h"
 #include "update_dc_event.h"
 #include "process/update_command.h"
@@ -25,6 +26,42 @@
 #define SYNCHRONIZE_REPOSITORY      6
 #define UPDATE_DC                   7
 
+#define CHECK_ISMAS_CONNECT_PERCENT_START   ( 1)
+#define CHECK_ISMAS_CONNECT_PERCENT_END     (10)
+
+#define CHECK_UPDATE_REQUEST_PERCENT_START  (10)
+#define CHECK_UPDATE_REQUEST_PERCENT_END    (20)
+
+#define UPDATE_GIT_PERCENT_START            (20)
+#define UPDATE_GIT_PERCENT_END              (21)
+
+#define UPDATE_OPKG_NOACTION_PERCENT_START  (21)
+#define UPDATE_OPKG_NOACTION_PERCENT_END    (25)
+
+#define UPDATE_OPKG_PERCENT_START           (25)
+#define UPDATE_OPKG_PERCENT_END             (40)
+
+#define UPDATE_DOWNLOAD_JSON_START          (40)
+#define UPDATE_DOWNLOAD_JSON_END            (49)
+
+#define UPDATE_SYNC_START                   (49)
+#define UPDATE_SYNC_END                     (50)
+
+#define UPDATE_DOWNLOAD_DC_START            (50)
+#define UPDATE_DOWNLOAD_DC_END              (100)
+
+void MainWindow::onFileChanged(QString const& /*f*/) {
+    static int i = 30;
+    ui->updateProgress->setValue(++i);
+
+    qCritical() << QDateTime::currentDateTime().toString(Qt::ISODate) << "YYYYYYYYYYYYYYYYYY file changed" << i;
+
+    // TODO: daten an ISMAS senden
+}
+
+QProgressBar *MainWindow::progressBar() {
+    return ui ? ui->updateProgress : nullptr;
+}
 
 MainWindow::MainWindow(Worker *worker, QWidget *parent)
     : QMainWindow(parent)
@@ -32,10 +69,15 @@ MainWindow::MainWindow(Worker *worker, QWidget *parent)
     , m_worker(worker)
     , m_width(60)
     , m_progressRunning(false)
-    , m_updateStep(UpdateDcEvent::UpdateStep::NONE) {
+    , m_updateStep(UpdateDcEvent::UpdateStep::NONE)
+    , m_updateLog("/opt/app/tools/atbupdate/update.log") { // TODO: in ini-file eintragen
 
     ui->setupUi(this);
 
+    if (!m_updateLog.open(QIODevice::ReadWrite | QIODevice::Unbuffered)) {
+        qCritical() << "ERROR can not open" << m_updateLog.fileName();
+    }
+
     m_updateSteps.resize(8);
     m_updateSteps[CHECK_BACKEND_CONNECTION] = "Check backend connection (ISMAS) ";
     m_updateSteps[CHECK_UPDATE_REQUEST] = "Check update request ";
@@ -274,6 +316,7 @@ void MainWindow::onShowTariffUpdate(QString) {
 void MainWindow::onShowISMASConnectivity(QString status) {
     // qCritical() << __func__ << ":" << __LINE__ << "status" << status;
 
+    QString stepResult;
     QString s = m_updateSteps[CHECK_BACKEND_CONNECTION].trimmed();
 
     bool const custRepoExists = internal::customerRepoExists();
@@ -281,24 +324,46 @@ void MainWindow::onShowISMASConnectivity(QString status) {
     if (status.contains(UpdateCommand::ISMAS_CONNECTED, Qt::CaseInsensitive)) {
         if (custRepoExists) {
             s += " <font color='Green'>connected</font>";
+            stepResult = "ISMAS connected";
         } else {
             s += " <font color='Green'>connected&nbsp;(initial configuration)</font>";
+            stepResult = "ISMAS connected (initial configuration)";
         }
     } else
     if (status.contains(UpdateCommand::NO_CUSTOMER_REPOSITORY, Qt::CaseInsensitive)) {
         s += " <font color='Blue'>NOT CONNECTED</font>";
+        stepResult = "ISMAS not connected";
     } else
     if (status.contains(UpdateCommand::ISMAS_CONNECTION_IN_PROGRESS, Qt::CaseInsensitive)) {
         s += " <font color='Green'>connecting</font>";
+        stepResult = "connecting ISMAS";
     } else
     if (status.contains(UpdateCommand::ISMAS_NOT_CONNECTED, Qt::CaseInsensitive)) {
         if (custRepoExists) {
             s += " <font color='Red'>NOT CONNECTED. STOP</font>";
+            stepResult = "ISMAS not connected";
         } else {
             s += " <font color='Red'>not connected.&nbsp;(initial configuration)</font>";
+            stepResult = "ISMAS not connected (initial configuration)";
         }
     } else {
         s += " <font color='Red'>UNKNOWN STATUS</font>";
+        stepResult = "unknown status";
+    }
+
+    struct LogLineEntry logLine =
+        initLogLineEntry(1, // receiver
+                         QDateTime::currentDateTime().toString(Qt::ISODate).toUtf8().constData(),
+                         _ISMAS_CONTINUE,
+                         0, // eventState
+                         CHECK_ISMAS_CONNECT_PERCENT_START,
+                         ISMAS::RESULT_CODE::E_SUCCESS,
+                         "show ISMAS connectivity", // step
+                         stepResult.toUtf8().constData()); // stepResult
+
+    int w = 0;
+    if ((w = m_updateLog.write((char *)(&logLine), sizeof(logLine))) != sizeof(logLine)) {
+        qCritical() << __func__ << ":" << __LINE__ << "ERROR only" << w << "bytes written";
     }
 
     m_updateSteps[CHECK_BACKEND_CONNECTION] = s;
@@ -307,6 +372,20 @@ void MainWindow::onShowISMASConnectivity(QString status) {
         s += m_updateSteps[i] + "<br />";
     }
     ui->stepLabel->setText(s);
+
+    logLine =
+        initLogLineEntry(1, // receiver
+                         QDateTime::currentDateTime().toString(Qt::ISODate).toUtf8().constData(),
+                         _ISMAS_CONTINUE,
+                         0, // eventState
+                         CHECK_ISMAS_CONNECT_PERCENT_END,
+                         ISMAS::RESULT_CODE::E_SUCCESS,
+                         "show ISMAS connectivity", // step
+                         stepResult.toUtf8().constData()); // stepResult
+
+    if ((w = m_updateLog.write((char *)(&logLine), sizeof(logLine))) != sizeof(logLine)) {
+        qCritical() << __func__ << ":" << __LINE__ << "ERROR only" << w << "bytes written";
+    }
 }
 
 void MainWindow::onShowCustRepoStatus(QString status) {
@@ -458,6 +537,7 @@ void MainWindow::onShowUpdateDCFirmware(QString status) {
 void MainWindow::onShowUpdateRequest(QString status) {
     // qCritical() << __func__ << ":" << __LINE__ << "status" << status;
 
+    //ui->updateProgress->setValue(CHECK_UPDATE_REQUEST_PERCENT_START);
     QString s = m_updateSteps[CHECK_UPDATE_REQUEST].trimmed();
 
     bool const custRepoExists = internal::customerRepoExists();
@@ -469,17 +549,20 @@ void MainWindow::onShowUpdateRequest(QString status) {
             s += " <font color='Blue'>not requested&nbsp;(initial configuration)</font>";
         }
     } else
-    if (status.contains(UpdateCommand::UPDATE_REQUESTED, Qt::CaseInsensitive)) {
+    if (status.contains(internal::UPDATE_REQUESTED, Qt::CaseInsensitive)) {
         if (custRepoExists) {
             s += " <font color='Green'>requested</font>";
         } else {
             s += " <font color='Blue'>requested&nbsp;(initial configuration)</font>";
         }
     } else
-    if (status.contains(UpdateCommand::UPDATE_NOT_NECESSARY, Qt::CaseInsensitive)) {
+    if (status.contains(internal::UPDATE_INITIAL, Qt::CaseInsensitive)) {
+        s += " <font color='Green'>requested&nbsp;(initial configuration)</font>";
+    } else
+    if (status.contains(internal::UPDATE_NOT_NECESSARY, Qt::CaseInsensitive)) {
         s += " <font color='Green'>not necessary</font>";
     } else
-    if (status.contains(UpdateCommand::NO_CUSTOMER_REPOSITORY, Qt::CaseInsensitive)) {
+    if (status.contains(internal::NO_CUSTOMER_REPOSITORY, Qt::CaseInsensitive)) {
         s += " <font color='Blue'>UNKNOWN (ISMAS not connected)</font>";
     } else {
         s += " <font color='Red'>UNKNOWN</font>";
@@ -491,6 +574,7 @@ void MainWindow::onShowUpdateRequest(QString status) {
         s += m_updateSteps[i] + "<br />";
     }
     ui->stepLabel->setText(s);
+    //ui->updateProgress->setValue(CHECK_UPDATE_REQUEST_PERCENT_END);
 }
 
 void MainWindow::onShowISMASChecks(QString) {