diff --git a/companion/src/mainwindow.cpp b/companion/src/mainwindow.cpp
index 6f16a2b9f..c165d69a0 100644
--- a/companion/src/mainwindow.cpp
+++ b/companion/src/mainwindow.cpp
@@ -667,41 +667,47 @@ void MainWindow::contributors()
 
 void MainWindow::sdsync()
 {
+  QString sdPath = g.profile[g.id()].sdPath();
+  if (sdPath.isEmpty()) {
+    QMessageBox::warning(this, QObject::tr("Synchronization error"), QObject::tr("No SD directory configured!"));
+    return;
+  }
   QString massstoragePath = findMassstoragePath("SOUNDS");
   if (massstoragePath.isEmpty()) {
     QMessageBox::warning(this, QObject::tr("Synchronization error"), QObject::tr("No Radio connected!"));
     return;
   }
-  massstoragePath += "/..";
+  massstoragePath = massstoragePath.left(massstoragePath.length() - 7);
   ProgressDialog progressDialog(this, tr("Synchronize SD"), CompanionIcon("sdsync.png"));
   SyncProcess syncProcess(massstoragePath, g.profile[g.id()].sdPath(), progressDialog.progress());
-  syncProcess.run();
-  progressDialog.exec();
+  if (!syncProcess.run()) {
+    progressDialog.exec();
+  }
 }
 
 void MainWindow::changelog()
 {
-    ReleaseNotesDialog * dialog = new ReleaseNotesDialog(this);
-    dialog->exec();
+  ReleaseNotesDialog * dialog = new ReleaseNotesDialog(this);
+  dialog->exec();
 }
 
 void MainWindow::fwchangelog()
 {
-    Firmware *currfirm = GetCurrentFirmware();
-    QString rn=currfirm->getReleaseNotesUrl();
-    if (rn.isEmpty()) {
-      QMessageBox::information(this, tr("Firmware updates"), tr("Current firmware does not provide release notes informations."));
-    }
-    else {
-      ReleaseNotesFirmwareDialog * dialog = new ReleaseNotesFirmwareDialog(this, rn);
-      dialog->exec();
-    }
+  Firmware * firmware = GetCurrentFirmware();
+  QString url = firmware->getReleaseNotesUrl();
+  if (url.isEmpty()) {
+    QMessageBox::information(this, tr("Firmware updates"), tr("Current firmware does not provide release notes informations."));
+  }
+  else {
+    ReleaseNotesFirmwareDialog * dialog = new ReleaseNotesFirmwareDialog(this, url);
+    dialog->exec();
+  }
 }
 
 void MainWindow::customizeSplash()
 {    
-    customizeSplashDialog *cd = new customizeSplashDialog(this);
-    cd->exec();
+  customizeSplashDialog * dialog = new customizeSplashDialog(this);
+  dialog->exec();
 }
 
 void MainWindow::cut()
diff --git a/companion/src/process_sync.cpp b/companion/src/process_sync.cpp
index 50e3e8f47..3b1df0c30 100755
--- a/companion/src/process_sync.cpp
+++ b/companion/src/process_sync.cpp
@@ -5,119 +5,127 @@
 #include <QMessageBox>
 #include <QTextStream>
 #include <QDebug>
+#include <QEventLoop>
+#include <QTimer>
 
-SyncProcess::SyncProcess(const QString &folder1, const QString &folder2, ProgressWidget *progress):
-folder1(folder1),
-folder2(folder2),
-progress(progress),
-simulation(false),
-index(0)
+SyncProcess::SyncProcess(const QString & folder1, const QString & folder2, ProgressWidget * progress):
+  folder1(folder1),
+  folder2(folder2),
+  progress(progress),
+  index(0),
+  count(0),
+  closed(false)
 {
+  connect(progress, SIGNAL(stopped()),this, SLOT(onClosed()));
 }
 
-void SyncProcess::run()
+void SyncProcess::onClosed()
 {
-  simulation = true;
-  index = 0;
-  if (synchronize()) {
-    int count = index;
-    progress->setMaximum(count);
-    simulation = false;
-    index = 0;
-    synchronize();
-    progress->setValue(count);
-  }
+  closed = true;
 }
 
-bool SyncProcess::synchronize()
+bool SyncProcess::run()
 {
   if (!QFile::exists(folder1)) {
     QMessageBox::warning(NULL, QObject::tr("Synchronization error"), QObject::tr("The directory '%1' doesn't exist!").arg(folder1));
-    return false;
+    return true;
   }
+
   if (!QFile::exists(folder2)) {
     QMessageBox::warning(NULL, QObject::tr("Synchronization error"), QObject::tr("The directory '%1' doesn't exist!").arg(folder2));
-    return false;
+    return true;
   }
+
+  count = getFilesCount(folder1) + getFilesCount(folder2);
+  progress->setMaximum(count);
+
   QStringList errors = updateDir(folder1, folder2) + updateDir(folder2, folder1);
   if (errors.count() > 0) {
     QMessageBox::warning(NULL, QObject::tr("Synchronization error"), errors.join("\n"));
-    return false;
   }
-  return true;
+
+  // don't close the window unless the user wanted
+  return closed;
 }
 
-QStringList SyncProcess::updateDir(const QDir &source, const QDir &destination)
+int SyncProcess::getFilesCount(const QString & directory)
+{
+  int result = 0;
+  QDirIterator it(directory, QDirIterator::Subdirectories);
+  while (it.hasNext()) {
+    it.next();
+    result++;
+  }
+  return result;
+}
+
+QStringList SyncProcess::updateDir(const QString & source, const QString & destination)
 {
   QDirIterator it(source, QDirIterator::Subdirectories);
-  while (it.hasNext()) {
-    if (!simulation) {
-      progress->setValue(index);
-    }
-    QString path = it.next();
-    // qDebug() << path;
-    QFileInfo sourceInfo(path);
-    QString relativePath = source.relativeFilePath(path);
-    QString destinationPath = destination.absoluteFilePath(relativePath);
-    QFileInfo destinationInfo(destinationPath);
-    if (sourceInfo.isDir()) {
-      if (!destinationInfo.exists()) {
-        ++index;
-        if (!simulation) {
-          progress->addText(tr("Create directory %1\n").arg(destinationPath));
-          if (!destination.mkdir(relativePath)) {
-            errors << QObject::tr("Create '%1' failed").arg(destinationPath);
-            continue;
-          }
-        }
-      }
-    }
-    else {
-      if (!destinationInfo.exists()) {
-        // qDebug() << "Copy" << path << "to" << destinationPath;
-        ++index;
-        if (!simulation) {
-          progress->addText(tr("Copy %1 to %2\n").arg(path).arg(destinationPath));
-          if (!QFile::copy(path, destinationPath)) {
-            errors << QObject::tr("Copy '%1' to '%2' failed").arg(path).arg(destinationPath);
-            continue;
-          }
-        }
-      }
-      else if (sourceInfo.lastModified() > destinationInfo.lastModified()) {
-        ++index;
-        if (!simulation) {
-          progress->addText(tr("Read %1\n").arg(path));
-          // retrieve source contents
-          QFile sourceFile(path);
-          if (!sourceFile.open(QFile::ReadOnly)) {
-            errors << QObject::tr("Open '%1' failed").arg(path);
-            continue;
-          }
-          QString sourceContents = sourceFile.readAll();
-          sourceFile.close();
-          // try to retrieve destination contents
-          QFile destinationFile(path);
-          if (destinationFile.open(QFile::ReadOnly)) {
-            QString destinationContents = destinationFile.readAll();
-            destinationFile.close();
-            if (sourceContents == destinationContents) {
-              // qDebug() << "Skip" << path;
-              continue;
-            }
-          }
-          if (!destinationFile.open(QFile::WriteOnly)) {
-            errors << QObject::tr("Write '%1' failed").arg(destinationPath);
-            continue;
-          }
-          progress->addText(tr("Write %1\n").arg(destinationPath));
-          // qDebug() << "Write" << destinationPath;
-          QTextStream destinationStream(&destinationFile);
-          destinationStream << sourceContents;
-          destinationFile.close();
-        }
-      }
+  while (!closed && it.hasNext()) {
+    QEventLoop loop;
+    QTimer::singleShot(10, &loop, SLOT(quit()));
+    loop.exec();
+    index++;
+    progress->setInfo(tr("%1/%2 files").arg(index).arg(count));
+    progress->setValue(index);
+    QString result = updateEntry(it.next(), source, destination);
+    if (!result.isEmpty()) {
+      errors << result;
     }
   }
   return errors;
 }
+
+QString SyncProcess::updateEntry(const QString & path, const QDir & source, const QDir & destination)
+{
+  QFileInfo sourceInfo(path);
+  QString relativePath = source.relativeFilePath(path);
+  QString destinationPath = destination.absoluteFilePath(relativePath);
+  QFileInfo destinationInfo(destinationPath);
+  if (sourceInfo.isDir()) {
+    if (!destinationInfo.exists()) {
+      progress->addText(tr("Create directory %1\n").arg(destinationPath));
+      if (!destination.mkdir(relativePath)) {
+        return QObject::tr("Create '%1' failed").arg(destinationPath);
+      }
+    }
+  }
+  else {
+    if (!destinationInfo.exists()) {
+      // qDebug() << "Copy" << path << "to" << destinationPath;
+      progress->addText(tr("Copy %1 to %2\n").arg(path).arg(destinationPath));
+      if (!QFile::copy(path, destinationPath)) {
+        return QObject::tr("Copy '%1' to '%2' failed").arg(path).arg(destinationPath);
+      }
+    }
+    else if (sourceInfo.lastModified() > destinationInfo.lastModified()) {
+      // retrieve source contents
+      QFile sourceFile(path);
+      if (!sourceFile.open(QFile::ReadOnly)) {
+        return QObject::tr("Open '%1' failed").arg(path);
+      }
+      QString sourceContents = sourceFile.readAll();
+      sourceFile.close();
+      // try to retrieve destination contents
+      QFile destinationFile(path);
+      if (destinationFile.open(QFile::ReadOnly)) {
+        QString destinationContents = destinationFile.readAll();
+        destinationFile.close();
+        if (sourceContents == destinationContents) {
+          // qDebug() << "Skip" << path;
+          return QString();
+        }
+      }
+      if (!destinationFile.open(QFile::WriteOnly)) {
+        return QObject::tr("Write '%1' failed").arg(destinationPath);
+      }
+      progress->addText(tr("Write %1\n").arg(destinationPath));
+      // qDebug() << "Write" << destinationPath;
+      QTextStream destinationStream(&destinationFile);
+      destinationStream << sourceContents;
+      destinationFile.close();
+    }
+  }
+  return QString();
+}
diff --git a/companion/src/process_sync.h b/companion/src/process_sync.h
index d5949f5de..0835d933d 100755
--- a/companion/src/process_sync.h
+++ b/companion/src/process_sync.h
@@ -1,7 +1,6 @@
 #ifndef SYNCPROCESS_H_
 #define SYNCPROCESS_H_
 
-#include <QObject>
 #include <QString>
 #include <QStringList>
 
@@ -10,21 +9,26 @@ class ProgressWidget;
 
 class SyncProcess : public QObject
 {
-  Q_OBJECT
+    Q_OBJECT
 
-public:
-  SyncProcess(const QString &folder1, const QString &folder2, ProgressWidget *progress);
-  void run();
+  public:
+    SyncProcess(const QString & folder1, const QString & folder2, ProgressWidget * progress);
+    bool run();
 
-protected:
-  bool synchronize();
-  QStringList updateDir(const QDir &source, const QDir &destination);
-  QString folder1;
-  QString folder2;
-  ProgressWidget *progress;
-  QStringList errors;
-  bool simulation;
-  int index;
+  protected slots:
+    void onClosed();
+
+  protected:
+    int getFilesCount(const QString & directory);
+    QStringList updateDir(const QString & source, const QString & destination);
+    QString updateEntry(const QString & path, const QDir & source, const QDir & destination);
+    QString folder1;
+    QString folder2;
+    ProgressWidget * progress;
+    QStringList errors;
+    int index;
+    int count;
+    bool closed;
 };
 
 #endif /* SYNCPROCESS_H_ */
diff --git a/companion/src/progressdialog.cpp b/companion/src/progressdialog.cpp
index d4e793af4..57f016d37 100755
--- a/companion/src/progressdialog.cpp
+++ b/companion/src/progressdialog.cpp
@@ -23,7 +23,7 @@ ProgressDialog::~ProgressDialog()
   delete ui;
 }
 
-ProgressWidget *ProgressDialog::progress()
+ProgressWidget * ProgressDialog::progress()
 {
   return ui->outputProgress;
 }
@@ -31,6 +31,7 @@ ProgressWidget *ProgressDialog::progress()
 void ProgressDialog::on_closeButton_clicked()
 {
   if (!locked) {
+    ui->outputProgress->stop();
     close();
   }
 }
diff --git a/companion/src/progressdialog.h b/companion/src/progressdialog.h
index 59e688f0e..1547f08d2 100755
--- a/companion/src/progressdialog.h
+++ b/companion/src/progressdialog.h
@@ -18,7 +18,7 @@ public:
   ProgressDialog(QWidget *parent, const QString &label, const QIcon &icon, bool forceOpen=false);
   ~ProgressDialog();
 
-  ProgressWidget *progress();
+  ProgressWidget * progress();
 
 private slots:
   void on_closeButton_clicked();
diff --git a/companion/src/progresswidget.cpp b/companion/src/progresswidget.cpp
index 9c19aa01e..472af5ca9 100755
--- a/companion/src/progresswidget.cpp
+++ b/companion/src/progresswidget.cpp
@@ -29,6 +29,11 @@ ProgressWidget::~ProgressWidget()
   delete ui;
 }
 
+void ProgressWidget::stop()
+{
+  emit stopped();
+}
+
 void ProgressWidget::forceOpen()
 {
   ui->checkBox->hide();
diff --git a/companion/src/progresswidget.h b/companion/src/progresswidget.h
index ba1007963..19d4500cd 100755
--- a/companion/src/progresswidget.h
+++ b/companion/src/progresswidget.h
@@ -24,10 +24,12 @@ class ProgressWidget : public QWidget
     void setProgressColor(const QColor &color);
     void addSeparator();
     void forceOpen();
+    void stop();
 
   signals:
     void detailsToggled();
     void locked(bool);
+    void stopped();
 
   protected slots:
     void on_checkBox_toggled(bool checked);