diff --git a/include/interfaces.h b/include/interfaces.h
index 5169476..b072f18 100755
--- a/include/interfaces.h
+++ b/include/interfaces.h
@@ -399,6 +399,7 @@ struct T_bna
 };
 
 class hwapi;
+class DownloadThread;
 class hwinf
 {
 
@@ -2276,30 +2277,53 @@ public:
 
 
     // download device controller
-    virtual void dcDownloadStart() {}
-    virtual bool dcDownloadFinished() { return true; }
-    virtual bool dcDownloadRequest(QString const &fileToDownload) {
+    virtual bool dcDownloadRequest(QString const &fileToDownload) const {
         Q_UNUSED(fileToDownload);
         return false;
     }
     virtual bool dcDownloadRequested() const { return false; }
-    virtual bool dcDownloadResetRequest() { return false; }
-    virtual QString dcDownloadFileName() const { return ""; }
-    virtual void dcDownloadReportStart() {}
-    virtual bool dcDownloadReportRunning() { return true; }
+    virtual bool dcDownloadResetRequest() const { return false; }
+    virtual bool dcDownloadRequestAck() const { return false; }
+    virtual bool dcDownloadRunning() const { return false; }
+    virtual bool dcDownloadFinished() { return false; }
+
+    virtual bool dcDownloadReportStart() const { return false; }
+    virtual bool dcDownloadReportRunning() const { return true; }
     virtual bool dcDownloadReportFinished() { return true; }
+
+    virtual bool dcDownloadThreadStart() { return false; }
+    virtual bool dcDownloadThreadRunning() const { return true; }
+    virtual void dcDownloadThreadFinalize(DownloadThread *) {}
+    virtual bool dcDownloadThreadFinished() const { return true; }
+    virtual bool dcDownloadReportThreadStart() { return false; }
+    virtual bool dcDownloadReportThreadRunning() const { return true; }
+    virtual void dcDownloadReportThreadFinalize() {}
+    virtual void dcDownloadReportThreadQuit() {}
+    virtual bool dcDownloadReportThreadFinished() const { return true; }
+
+
+    virtual QString dcDownloadFileName() const { return ""; }
+    virtual bool dcDownloadSetRequested(bool requested) {
+       Q_UNUSED(requested); return false;
+    }
+    virtual bool dcDownloadSetRunning(bool running) {
+       Q_UNUSED(running); return false;
+    }
+    virtual bool dcDownloadSetFinished(bool finished) {
+       Q_UNUSED(finished); return false;
+    }
     virtual void dcDownloadSetTotalBlockNumber(uint16_t totalBlockNumber) {
        Q_UNUSED(totalBlockNumber);
     }
     virtual void dcDownloadSetCurrentBlockNumber(uint16_t currentBlockNumber) {
        Q_UNUSED(currentBlockNumber);
     }
+    virtual bool dcDownloadGetRequested() const { return false; }
+    virtual bool dcDownloadGetRunning() const { return false; }
+    virtual bool dcDownloadGetFinished() const { return false; }
     virtual uint16_t dcDownloadGetTotalBlockNumber() const { return 0; }
     virtual uint16_t dcDownloadGetCurrentBlockNumber() const { return 0; }
 
-    virtual bool dcDownloadRunning() const { return false; }
-    virtual bool dcDownloadFinished() const { return false; }
-
     virtual QObject const *getAPI() { return nullptr; }
 
 signals:    // for download