diff --git a/Control/brewpi/serial_test.py b/Control/brewpi/serial_test.py
index 34006a6..5d62b39 100644
--- a/Control/brewpi/serial_test.py
+++ b/Control/brewpi/serial_test.py
@@ -3,28 +3,66 @@
 import time
 import serial
 
+def reset():
+	ser.dtr = True
+	ser.rts = False
+	time.sleep(0.05)
+	ser.dtr = True
+	ser.rts = True
+
+def enter_bootloader():
+	ser.dtr = True
+	ser.rts = False
+	time.sleep(0.05)
+	ser.dtr = False
+	ser.rts = True
+
 if __name__ == '__main__':
 
 	ser = serial.Serial ('/dev/ttyUSB0', 9600)
-	ser.set_output_flow_control(True)
-	
+
 	try:
 		ser.open()
 	except:
 		ser.close()
 		ser.open()
 
-	time.sleep(1.0)
-	print ("RTS = {}, DTR = {}".format(ser.rts, ser.dtr))
-	time.sleep(0.5)
+	if 0:
+		time.sleep(1.0)
+		print ("RTS = {}, DTR = {}".format(ser.rts, ser.dtr))
+		time.sleep(0.5)
 
-	ser.rts = False
-	print ("RTS = {}, DTR = {}".format(ser.rts, ser.dtr))
-	time.sleep(0.5)
+		ser.rts = False
+		print ("RTS = {}, DTR = {}".format(ser.rts, ser.dtr))
+		time.sleep(0.5)
+
+		ser.dtr = False
+		print ("RTS = {}, DTR = {}".format(ser.rts, ser.dtr))
+		time.sleep(1.0)
+
+	print("Start firmware update")
+	enter_bootloader()
+	ser.timeout = 0.100
+	ser.readline()
+
+	ser.flushInput()
+	with open("hendictrl.srec", 'r') as fp:
+		while(True):
+			s = fp.readline()
+			if s == '':
+				break
+			data = s.encode()
+#			print(data)
+			ser.write(data)
+#			print(ser.read())
 
-	ser.dtr = False
-	print ("RTS = {}, DTR = {}".format(ser.rts, ser.dtr))
 	time.sleep(1.0)
+	ser.flushInput()
+
+	print("Start application")
+	reset()
+	print(ser.readline().decode('utf-8'))
+	print(ser.readline().decode('utf-8'))
 
 	ser.close()