diff --git a/tools/remoteFlash.sh b/tools/remoteFlash.sh
index c8d3446..3f679a0 100755
--- a/tools/remoteFlash.sh
+++ b/tools/remoteFlash.sh
@@ -1,38 +1,46 @@
 #!/bin/bash
 
-IP=$1
+MQTTSERVER=$1
+MQTTPREFIX=$2
 
 FLASHTOOL=./tools/tcpFlash.py
 
+UPGRADEPREP=/tmp/upgradeCMD4clock.txt
+
 if [ ! -f $FLASHTOOL ]; then
  echo "Execute the script in root folder of the project"
  exit 2
 fi
 
-if [ "$IP" == "" ]; then
- echo "IP address of ESP required"
+if [[ "$MQTTPREFIX" == "" ]] || [[ "$MQTTSERVER" == "" ]]; then
+ echo "MQTTSERVER: ip address to mqtt server"
+ echo "MQTTPREFIX: configured prefex in MQTT of ESP required"
  echo "usage:"
- echo "$0 <IP>"
- echo "$0 192.168.0.2"
+ echo "$0 <MQTTSERVER> <MQTTPREFIX>"
+ echo "$0 192.168.0.2 basetopic"
  exit 1
 fi
 
 # check the connection
-echo "Searching $IP ..."
-ping $IP -c 2 >> /dev/null
+echo "Searching $MQTTPREFIX ..."
+mosquitto_sub -h $MQTTSERVER -t "$MQTTPREFIX/#" -C 1 -v
 if [ $? -ne 0 ]; then
- echo "Entered IP address: $IP is NOT online"
+ echo "Entered Wordclock address: $MQTTPREFIX on $MQTTSERVER is NOT online"
  exit 2
 fi
-echo "Upgrading $IP"
+echo "Activate Telnet server"
+mosquitto_pub -h $MQTTSERVER -t "$MQTTPREFIX/cmd/telnet" -m "a"
+TELNETIP=$(mosquitto_sub -h $MQTTSERVER -t "$MQTTPREFIX/telnet" -C 1)
+echo "Upgrading $MQTTPREFIX via telenet on $TELNETIP"
 
-echo "stopWordclock()" > /tmp/wordClockCMD.txt
-echo "uart.write(0, tostring(node.heap())" >> /tmp/wordClockCMD.txt
-echo "c = string.char(0,0,128)"  >> /tmp/wordClockCMD.txt
-echo "w = string.char(0,0,0)"  >> /tmp/wordClockCMD.txt
-echo "ws2812.write(w:rep(4) .. c .. w:rep(15) .. c .. w:rep(9) .. c .. w:rep(30) .. c .. w:rep(41) .. c )" >> /tmp/wordClockCMD.txt
-$FLASHTOOL -f /tmp/wordClockCMD.txt -t $IP -v
+echo "stopWordclock()" > $UPGRADEPREP
+echo "uart.write(0, tostring(node.heap())" >> $UPGRADEPREP
+echo "c = string.char(0,0,128)"  >> $UPGRADEPREP
+echo "w = string.char(0,0,0)"  >> $UPGRADEPREP
+echo "ws2812.write(w:rep(4) .. c .. w:rep(15) .. c .. w:rep(9) .. c .. w:rep(30) .. c .. w:rep(41) .. c )" >> $UPGRADEPREP
+$FLASHTOOL -f $UPGRADEPREP -t $TELNETIP -v
 
+exit 2
 FILES="displayword.lua main.lua timecore.lua webpage.html webserver.lua wordclock.lua init.lua"
 
 echo "Start Flasing ..."
@@ -43,7 +51,7 @@ for f in $FILES; do
         exit 1
     fi
     echo "------------- $f ------------"
-    $FLASHTOOL -t $IP -f $f 
+    $FLASHTOOL -t $TELNETIP -f $f 
     if [ $? -ne 0 ]; then
         echo "STOOOOP"
         exit 1
@@ -51,6 +59,6 @@ for f in $FILES; do
 done
 
 echo "TODO: Reboot the ESP"
-#echo "node.restart()" | nc $IP 80
+#echo "node.restart()" | nc $TELNETIP 23
 
 exit 0