diff --git a/deploy/windows-build.bat b/deploy/windows-build.bat
index 905cee9..2a7f5fe 100644
--- a/deploy/windows-build.bat
+++ b/deploy/windows-build.bat
@@ -1,4 +1,4 @@
-cd ..
+cd %~dp0\..
 
 if not exist build mkdir build
 
diff --git a/gui/mainwindow.ui b/gui/mainwindow.ui
index f0fc336..41c2687 100644
--- a/gui/mainwindow.ui
+++ b/gui/mainwindow.ui
@@ -75,9 +75,6 @@
          <property name="editable">
           <bool>true</bool>
          </property>
-         <property name="currentText">
-          <string>master</string>
-         </property>
         </widget>
        </item>
        <item row="2" column="0" colspan="2">
diff --git a/i18n/Polish.ts b/i18n/Polish.ts
index 5079bde..b6fbb16 100644
--- a/i18n/Polish.ts
+++ b/i18n/Polish.ts
@@ -4,30 +4,25 @@
 <context>
     <name>MainWindow</name>
     <message>
-        <location filename="../luftdaten-tool.py" line="147"/>
+        <location filename="../luftdaten-tool.py" line="199"/>
         <source>No boards found</source>
         <translation>Nie znaleziono płytki</translation>
     </message>
     <message>
-        <location filename="../luftdaten-tool.py" line="152"/>
+        <location filename="../luftdaten-tool.py" line="204"/>
         <source>Others...</source>
         <translation>Inne...</translation>
     </message>
     <message>
-        <location filename="../luftdaten-tool.py" line="181"/>
+        <location filename="../luftdaten-tool.py" line="233"/>
         <source>No device selected.</source>
         <translation>Nie wybrano urządzenia.</translation>
     </message>
     <message>
-        <location filename="../luftdaten-tool.py" line="185"/>
+        <location filename="../luftdaten-tool.py" line="237"/>
         <source>No version selected.</source>
         <translation>Nie wybrano wersji.</translation>
     </message>
-    <message>
-        <location filename="../gui/mainwindow.py" line="130"/>
-        <source>Luftdaten.info Flashing Tool</source>
-        <translation></translation>
-    </message>
     <message>
         <location filename="../gui/mainwindow.py" line="131"/>
         <source>Board:</source>
@@ -40,58 +35,63 @@
     </message>
     <message>
         <location filename="../gui/mainwindow.py" line="133"/>
-        <source>master</source>
-        <translation>master</translation>
-    </message>
-    <message>
-        <location filename="../gui/mainwindow.py" line="134"/>
         <source>Upload</source>
         <translation>Wgraj</translation>
     </message>
     <message>
-        <location filename="../gui/mainwindow.py" line="135"/>
+        <location filename="../gui/mainwindow.py" line="134"/>
         <source>Expert mode</source>
         <translation>Tryb eksperta</translation>
     </message>
     <message>
-        <location filename="../gui/mainwindow.py" line="136"/>
+        <location filename="../gui/mainwindow.py" line="135"/>
         <source>Baudrate:</source>
         <translation>Prędkość portu:</translation>
     </message>
     <message>
-        <location filename="../luftdaten-tool.py" line="200"/>
+        <location filename="../luftdaten-tool.py" line="252"/>
         <source>Invalid version / file does not exist</source>
         <translation>Błędna wersja / plik nie istnieje</translation>
     </message>
     <message>
-        <location filename="../luftdaten-tool.py" line="205"/>
+        <location filename="../luftdaten-tool.py" line="257"/>
         <source>Work in progess...</source>
         <translation>Praca w toku...</translation>
     </message>
     <message>
-        <location filename="../luftdaten-tool.py" line="233"/>
+        <location filename="../luftdaten-tool.py" line="284"/>
         <source>Downloading...</source>
         <translation>Pobieranie...</translation>
     </message>
     <message>
-        <location filename="../luftdaten-tool.py" line="244"/>
+        <location filename="../luftdaten-tool.py" line="296"/>
         <source>Connecting...</source>
         <translation>Łączenie...</translation>
     </message>
     <message>
-        <location filename="../luftdaten-tool.py" line="249"/>
+        <location filename="../luftdaten-tool.py" line="301"/>
         <source>Connected. Chip type: {chip_type}</source>
         <translation>Połączono. Typ układu: {chip_type}</translation>
     </message>
     <message>
-        <location filename="../luftdaten-tool.py" line="267"/>
+        <location filename="../luftdaten-tool.py" line="319"/>
         <source>Writing at 0x{address:08x}...</source>
         <translation>Zapisywanie pod adresem 0x{address:08x}...</translation>
     </message>
     <message>
-        <location filename="../luftdaten-tool.py" line="278"/>
+        <location filename="../luftdaten-tool.py" line="330"/>
         <source>Finished in {time:.2f} seconds. Sensor ID: {sensor_id}</source>
         <translation>Zakończono w {time:.2f} sekundy. ID sensora: {sensor_id}</translation>
     </message>
+    <message>
+        <location filename="../gui/mainwindow.py" line="130"/>
+        <source>Luftdaten.info Flashing Tool</source>
+        <translation>Luftdaten.info Flashing Tool</translation>
+    </message>
+    <message>
+        <location filename="../luftdaten-tool.py" line="138"/>
+        <source>Loading firmware list...</source>
+        <translation>Ładowanie wersji oprogramowania...</translation>
+    </message>
 </context>
 </TS>
diff --git a/luftdaten-tool.py b/luftdaten-tool.py
index 25bc083..47cc787 100644
--- a/luftdaten-tool.py
+++ b/luftdaten-tool.py
@@ -135,6 +135,7 @@ class MainWindow(QtWidgets.QMainWindow, mainwindow.Ui_MainWindow):
 
         self.i18n_init(QtCore.QLocale.system())
 
+        self.statusbar.showMessage(self.tr("Loading firmware list..."))
         self.firmware_list = FirmwareListThread()
         self.firmware_list.onFirmware.connect(self.populate_versions)
         self.firmware_list.start()