diff --git a/install.sh b/install.sh
index 264a767..760d340 100644
--- a/install.sh
+++ b/install.sh
@@ -3,16 +3,20 @@
 URL=http://bit.ly/tor-router-zip
 WAIT=1
 
-echo "Updating Apt"
-apt-get update; 
-echo "Installing prerequisites"
-apt-get install -y -qq php5-cli unzip make uuid screen;
-echo "Downloading auto-configuration toolkit from $URL"
-wget $URL -O /tmp/master.zip; 
-sha1sum /tmp/master.zip > /etc/update_checksum
-cd /tmp && unzip ./master.zip;
-cd /tmp/tor-router-master && make && make install;
-echo "Setting new hostname"
+if [ ! -e /etc/update_checksum ]; then
+	echo "Updating Apt"
+	apt-get update; 
+	echo "Installing prerequisites"
+	apt-get install -y -qq php5-cli unzip make uuid screen;
+	echo "Downloading auto-configuration toolkit from $URL"
+	wget $URL -O /tmp/master.zip; 
+	sha1sum /tmp/master.zip > /etc/update_checksum
+	cd /tmp && unzip ./master.zip;
+	cd /tmp/tor-router-master && make && make install;
+	echo "Setting new hostname"
 
-echo "Hostname >>>$(hostname -f)<<<"
-/sbin/reboot
\ No newline at end of file
+	echo "Hostname >>>$(hostname -f)<<<"
+	/sbin/reboot
+else 
+	/usr/local/bin/tor-router-update.sh	
+fi