diff --git a/src/InterruptHandler.cpp b/src/InterruptHandler.cpp
index 687b2c2..b591bf5 100644
--- a/src/InterruptHandler.cpp
+++ b/src/InterruptHandler.cpp
@@ -19,6 +19,7 @@ IRAM_ATTR void   pinLevelChangeIsr(void);
 
 /*****************************************************/
 
+hw_timer_t * timer;
 
 
 /**
@@ -30,7 +31,7 @@ void InterruptHandler_Init(void)
     attachInterrupt(digitalPinToInterrupt(DIN_FUNK), pinLevelChangeIsr, CHANGE);
 
 #if 1
-    hw_timer_t * timer = timerBegin(0, 80, true); /* 80 -> 1 Mhz */
+    timer = timerBegin(0, 80, true); /* 80 -> 1 Mhz */
     timerAttachInterrupt(timer, &timerIsr, true);
     timerAlarmWrite(timer, ISR_TIME_US, true);
     timerAlarmEnable(timer);
@@ -103,6 +104,12 @@ IRAM_ATTR void   timerIsr()
     }   
 }
 
+IRAM_ATTR void   InterruptHandler_Stop(void)
+{
+	timerAlarmDisable(timer);
+    detachInterrupt(digitalPinToInterrupt(DIN_FUNK));
+}
+
 
 IRAM_ATTR void   InterruptHandler_PauseReceive()
 {
diff --git a/src/InterruptHandler.h b/src/InterruptHandler.h
index 6bb18fc..34712ef 100644
--- a/src/InterruptHandler.h
+++ b/src/InterruptHandler.h
@@ -18,7 +18,7 @@
 
 void InterruptHandler_Init(void);
 void InterruptHandler_PauseReceive();
-
+void InterruptHandler_Stop(void);
 
 
 
diff --git a/src/UpdateHandler.cpp b/src/UpdateHandler.cpp
index 4f622cd..e66807e 100644
--- a/src/UpdateHandler.cpp
+++ b/src/UpdateHandler.cpp
@@ -8,6 +8,7 @@
 #include "WebServer.h"
 #include <Update.h>
 #include "Version.h"
+#include "InterruptHandler.h"
 
 WebServer webServer;
 
@@ -80,6 +81,7 @@ void UpdateHandler()
 				HTTPUpload& upload = webServer.upload();
 				if (upload.status == UPLOAD_FILE_START)
 				{
+                    InterruptHandler_Stop();
 					Serial.printf("Update: %s\n", upload.filename.c_str());
 					if (!Update.begin(UPDATE_SIZE_UNKNOWN))
 					{ //start with max available size
@@ -101,7 +103,7 @@ void UpdateHandler()
 						Serial.printf("Update Success: %u\nRebooting...\n", upload.totalSize);
 					}
 					else
-					{
+					{                        
 						Update.printError(Serial);
 					}
 				}
diff --git a/src/Version.h b/src/Version.h
index 27a492f..7c48057 100644
--- a/src/Version.h
+++ b/src/Version.h
@@ -17,7 +17,7 @@
 #endif
 
 #define PROJECT_NAME    "FENSTER_PIEPSER_NODEMCU_32_S" PROJECT_VARIANT
-#define VERSION_STR     "v2.0.0"
+#define VERSION_STR     "v2.0.1"
 
 
 #endif /* VERSION_H_ */