--- a/eric6/MicroPython/PyBoardDevices.py	Mon Oct 05 19:51:55 2020 +0200
+++ b/eric6/MicroPython/PyBoardDevices.py	Tue Oct 06 17:52:44 2020 +0200
@@ -325,7 +325,7 @@
                 )
                 res = dlg.startProcess(program, args)
                 if res:
-                    dlg.exec_()
+                    dlg.exec()
     
     @pyqtSlot()
     def __flashMicroPython(self):
@@ -359,5 +359,5 @@
                     )
                     res = dlg.startProcess(program, args)
                     if res:
-                        dlg.exec_()
+                        dlg.exec()
                         self.__showDfuDisableInstructions()