diff --git a/update.cpp b/update.cpp
index 6557ce8..ff85864 100644
--- a/update.cpp
+++ b/update.cpp
@@ -8,6 +8,10 @@
 #include <QTextStream>
 #include <QRegularExpression>
 
+//#include <iostream>
+//#include <fstream>
+//#include <ctime>
+
 #include "plugins/interfaces.h"
 
 #include <QSharedMemory>
@@ -238,16 +242,12 @@ Update::DownloadResult Update::sendNextDataBlock(QByteArray const &binary,
     memcpy(local, binary.constData() + bAddr, 64);
     local[64] = local[65] = 0x00;
 
-    //for (int i=0; i<4; ++i) {
-    //    printf("%04d ", bNum);
-    //    for (int j=0; j < 16; ++j) {
-    //        printf("%02x ", local[i*16 + j]);
-    //    } printf("\n");
-    //}
+    // QByteArray b((const char *)(&local[0]), 64);
+    // qCritical() << "SNDB" << bNum << b.size() << b.toHex();
 
     while (noAnswerCount <= 250) {
         m_hw->bl_sendDataBlock(64, local);
-        std::this_thread::sleep_for(std::chrono::milliseconds(10));
+        QThread::msleep(10);
         DownloadResult const res = sendStatus(m_hw->bl_wasSendingDataOK());
         if (res != DownloadResult::NOP) {
             if (res == DownloadResult::ERROR) {
@@ -256,7 +256,7 @@ Update::DownloadResult Update::sendNextDataBlock(QByteArray const &binary,
                     return res;
                 }
             } else {
-                qInfo() << "data for block" << bNum << "OK";
+                // qInfo() << "data for block" << bNum << "OK";
                 return res;
             }
         } else {
@@ -803,21 +803,12 @@ bool Update::finishUpdate(bool swapCtrlFiles) {
         m_update_ctrl_file.close();
         m_update_ctrl_file_copy.close();
 
-        QString const &fn = m_update_ctrl_file.fileName();
-        QString const &fn_tmp = m_update_ctrl_file.fileName() + ".tmp";
-        QString const &fn_copy = m_update_ctrl_file_copy.fileName();
-        QFile tmp(fn_tmp);
+        //std::ifstream source(m_update_ctrl_file_copy.fileName().toStdString().c_str(), std::ios::binary);
+        //std::ofstream dest(m_update_ctrl_file.fileName().toStdString().c_str(), std::ios::binary);
 
-        if (tmp.exists()) {
-            tmp.remove();
-        }
-
-        if (m_update_ctrl_file.rename(fn_tmp)) {
-            if (m_update_ctrl_file_copy.rename(fn)) {
-                return m_update_ctrl_file.rename(fn_copy);
-            }
-        }
-        return false;
+        //dest << source.rdbuf();
+        //source.close();
+        //dest.close();
     }
     return true;
 }