diff --git a/DownloadDCJsonFiles/main.cpp b/DownloadDCJsonFiles/main.cpp
index b044507..aa861e3 100644
--- a/DownloadDCJsonFiles/main.cpp
+++ b/DownloadDCJsonFiles/main.cpp
@@ -113,28 +113,31 @@ int main(int argc, char **argv) {
         return 0;
     }
 
-    QString const customerRepo = QDir::cleanPath(workingDir + QDir::separator() + QString("customer_%1").arg(customerNr));
-
-    qCritical() << "Using customer repository" << customerRepo;
-
-    // always execute contents of opkg_commands-file
+    QString const &customerRepo = QDir::cleanPath(workingDir + QDir::separator() + QString("customer_%1").arg(customerNr));
     QStringList filesToUpdate;
 
-    QDir dir(QDir::cleanPath(customerRepo + QDir::separator() + "etc/psa_config"));
-
-    if (dir.exists()) {
-        QStringList jsons = dir.entryList(QStringList() << "DC2C*.json", QDir::Files);
-        if (!jsons.isEmpty()) {
-            for (QStringList::size_type i=0; i<jsons.size(); ++i) {
-                filesToUpdate << QDir::cleanPath(QString("etc/psa_config/") + jsons.at(i));
-            }
-        }
+    // etc/psa_config: located under mount-path
+    std::optional<QString> mountPath = System::checkForUSBStick(psaConfigDir);
+    if (mountPath.has_value()) {
+        filesToUpdate = System::getJsonFilesOnUsbStick(mountPath.value());
     } else {
-        qCritical() << "DIRECTORY" << dir << "DOES NOT EXIST";
-        return -1;
+        qCritical() << "Using customer repository" << customerRepo;
+
+        QDir dir(QDir::cleanPath(customerRepo + QDir::separator() + "etc/psa_config"));
+        if (dir.exists()) {
+            QStringList jsons = dir.entryList(QStringList() << "DC2C*.json", QDir::Files);
+            if (!jsons.isEmpty()) {
+                for (QStringList::size_type i=0; i<jsons.size(); ++i) {
+                    filesToUpdate << QDir::cleanPath(QString("etc/psa_config/") + jsons.at(i));
+                }
+            }
+        } else {
+            qCritical() << "DIRECTORY" << dir << "DOES NOT EXIST";
+            return -1;
+        }
     }
 
-    qCritical() << "JSON FILES TO UPDATE" << filesToUpdate;
+    // qCritical() << "JSON FILES TO UPDATE" << filesToUpdate;
 
     Update update(customerRepo,
                   QString::number(customerNr),
@@ -143,10 +146,13 @@ int main(int argc, char **argv) {
                   plugInName,
                   workingDir);
 
-    //update.checkJsonVersions();
-    update.doUpdate(filesToUpdate);
-    update.checkJsonVersions(filesToUpdate);
+    update.doUpdate(filesToUpdate, mountPath.has_value());
+    update.checkJsonVersions();
+    //update.checkJsonVersions(filesToUpdate);
+
+    if (mountPath.has_value()) {
+        System::umountUSBStick();
+    }
 
-    //return a.exec();
     return 0;
 }