diff --git a/update.cpp b/update.cpp
index 5e93e54..5ef2de8 100644
--- a/update.cpp
+++ b/update.cpp
@@ -244,10 +244,10 @@ bool Update::isSerialOpen() const {
                         // bootloader is really not running anymore.
  */
 bool Update::updateBinary(QString const &fileToSendToDC) {
+    qInfo() << "UPDATING DEVICE CONTROLLER FIRMWARE BINARY" << fileToSendToDC;
 
     return false;
 
-    qInfo() << "UPDATING DEVICE CONTROLLER FIRMWARE BINARY" << fileToSendToDC;
     QFile fn(fileToSendToDC);
     if (!fn.exists()) {
         // output via CONSOLE() etc
@@ -334,15 +334,6 @@ bool Update::downloadJson(enum FileTypeJson type,
                           int templateIdx,
                           QString jsFileToSendToDC) const {
 
-
-    // Utils::printInfoMsg(
-    //    QString("UPDATING JSON-FILE=%1, TEMPLATE-INDEX=%2, JSON-TYPE=%3")
-    //        .arg(jsFileToSendToDC)
-    //        .arg(templateIdx)
-    //        .arg(jsonType(type)));
-    //
-    // return true;
-
     m_hw->dc_autoRequest(true); // downloading Json needs the AutoEmission flag
     qDebug() << "SET AUTO-REQUEST=TRUE";
     QThread::sleep(1);  // make sure the auto-request flag is acknowledged
@@ -371,7 +362,25 @@ bool Update::downloadJson(enum FileTypeJson type,
                     if (m_hw->sys_sendJsonFileToDc((uint8_t)(type),
                                                    templateIdx,
                                                    (uint8_t *)ba.data())) {
-                        QThread::sleep(1);
+
+                        QThread::msleep(1000);
+
+                        // testing
+                        //m_hw->request_ReadbackMachineID();
+                        //QThread::msleep(500);
+
+                        //uint8_t data[64];
+                        //memset(data, 0x00, sizeof(data));
+                        //uint8_t length = 0;
+
+                        //m_hw->readback_machineIDdata(&length, data);
+
+                        //QThread::msleep(500);
+
+                        //QByteArray ba((const char*)data, length);
+
+                        //qCritical() << length << "MACHINE ID =" << ba.toHex(':');
+
                         ret = true;
                     }
                 } else {