Standalone simu would crash for "normal" Windows users on launch as they don't have write permissions to the Program Files folder. New method should be portable and store eeprom files in the user's standard document location.

companion/src/simulator.cpp

@@ -102,6 +102,10 @@ int main(int argc, char *argv[])
   RegisterFirmwares();
   SimulatorDialog *dialog;
   const char * eepromFileName;
+  QString fileName;
+  QByteArray path;
+  QDir eedir;
+  QFile file;
 
   QMessageBox msgBox;
   msgBox.setWindowTitle("Radio type");
@@ -111,17 +115,27 @@ int main(int argc, char *argv[])
   msgBox.addButton("9X", QMessageBox::ActionRole);
   QPushButton *exitButton = msgBox.addButton(QMessageBox::Close);
 
+  eedir = QDir(QDesktopServices::storageLocation(QDesktopServices::DocumentsLocation));
+  if (!eedir.exists("OpenTX")) {
+    eedir.mkdir("OpenTX");
+  }
+  eedir.cd("OpenTX");
+
   msgBox.exec();
   
   if (msgBox.clickedButton() == exitButton)
     return 0;
   else if (msgBox.clickedButton() == taranisButton) {
     current_firmware_variant = GetFirmwareVariant("opentx-taranis-en");
-    eepromFileName = "eeprom-taranis.bin";
+    fileName = eedir.filePath("eeprom-taranis.bin");
+    path = fileName.toAscii();
+    eepromFileName = path.data();
     dialog = new SimulatorDialogTaranis();
   }
   else {
-    eepromFileName = "eeprom-9x.bin";
+    fileName = eedir.filePath("eeprom-9x.bin");
+    path = fileName.toAscii();
+    eepromFileName = path.data();
     dialog = new SimulatorDialog9X();
   }