diff --git a/install b/install
index 02c8b158..a49022a0 100755
--- a/install
+++ b/install
@@ -1,27 +1,64 @@
 #!/bin/bash
 
-echo -e "\ninstallation script for CubeSatSim v2.2\n"
+FLAG=0
+checkout=0
+BULLSEYE=0
+UPDATE=0
 
- if [[ $(grep '11.' /etc/debian_version) ]]; then
-    echo "Installing on Debian 11 (Bullseye)"
+FILE=/home/pi/CubeSatSim/cubesatsim  # code has already been compiled
+if [ -f "$FILE" ]; then
+
+	UPDATE=1
+
+	echo -e "\nUpdate script for CubeSatSim v2.2\n"
+
+	if [ -z "$1" ] ; then
+		checkout=0
+	else
+		checkout=1
+		branch="$1"
+		echo -n "changing to branch "
+		echo $branch
+		FLAG=1
+	fi
+	
+	if [ "$2" = "n" ] ; then
+		noreboot=1
+	else
+		noreboot=0
+	fi
+
+else
+
+	echo -e "\nInstallation script for CubeSatSim v2.2\n"
+
+	touch /home/pi/CubeSatSim/command_control_direwolf
+
+    echo "creating $FILE"
+    echo "AMSAT 0 0 0 no 3 434.9 435 no 0 0 no 60" > /home/pi/CubeSatSim/sim.cfg
+
+	/home/pi/CubeSatSim/config -c -n
+
+	/home/pi/CubeSatSim/config -l -n
+
+fi
+
+if [[ $(grep '11.' /etc/debian_version) ]]; then
+
+	BULLSEYE=1
+
+    echo "Debian 11 (Bullseye) detected"
 
   	sudo cp /boot/config.txt /boot/config.txt.0
 
 	  sudo cp /boot/cmdline.txt /boot/cmdline.txt.0
 	
-	
 	  sudo raspi-config nonint do_i2c 0
 	
 	  sudo raspi-config nonint do_camera 0
 	
 	  sudo raspi-config nonint do_legacy 0
-	
-	#if [ "$1" = "u" ]; then
-	#fi
-	
-	##  sudo sed -i 's/console=serial0,115200 //g' /boot/cmdline.txt
 	  
-	
 	  sudo sed -i 's/console=serial0,115200 //g' /boot/cmdline.txt
 	
 	  sudo sed -i 's/console=tty1 r/console=tty1 maxcpus=1 r/g' /boot/cmdline.txt # single core if Pi Zero 2
@@ -86,7 +123,7 @@ echo -e "\ninstallation script for CubeSatSim v2.2\n"
 	    sudo sh -c 'echo "\ndtoverlay=pwm,pin=18,func=2" >> /boot/config.txt'
 	  fi
 	
-	  if [[ $(grep 'disable_splash=1 ' /boot/config.txt) ]]; then
+	  if [[ $(grep 'disable_splash=1' /boot/config.txt) ]]; then
 	    echo "disable_splash=1 already in /boot/config.txt"
 	  else
 	    echo "adding disable_splash=1 to /boot/config.txt"
@@ -106,25 +143,19 @@ echo -e "\ninstallation script for CubeSatSim v2.2\n"
   fi
 
 if [[ $(grep 'bookworm' /etc/os-release) ]]; then
-	echo "Bookworm detected, installation continuing."
+	
+	echo "Debian 12 (Bookworm) detected"
 
 	sudo cp /boot/firmware/config.txt /boot/firmware/config.txt.0
 	
 	sudo cp /boot/firmware/cmdline.txt /boot/firmware/cmdline.txt.0
 	
-	
 	sudo raspi-config nonint do_i2c 0
 	
 	sudo raspi-config nonint do_camera 0
 	
 	sudo raspi-config nonint do_legacy 0
 	
-	#if [ "$1" = "u" ]; then
-	#fi
-	
-	##  sudo sed -i 's/console=serial0,115200 //g' /boot/firmware/cmdline.txt
-  
-
 	  sudo sed -i 's/console=serial0,115200 //g' /boot/firmware/cmdline.txt
 	
 	  sudo sed -i 's/console=tty1 r/console=tty1 maxcpus=1 r/g' /boot/firmware/cmdline.txt # single core if Pi Zero 2
@@ -189,7 +220,7 @@ if [[ $(grep 'bookworm' /etc/os-release) ]]; then
 	    sudo sh -c 'echo "\ndtoverlay=pwm,pin=18,func=2" >> /boot/firmware/config.txt'
 	  fi
 	
-	  if [[ $(grep 'disable_splash=1 ' /boot/firmware/config.txt) ]]; then
+	  if [[ $(grep 'disable_splash=1' /boot/firmware/config.txt) ]]; then
 	    echo "disable_splash=1 already in /boot/firmware/config.txt"
 	  else
 	    echo "adding disable_splash=1 to /boot/firmware/config.txt"
@@ -214,8 +245,10 @@ if [[ $(grep 'bookworm' /etc/os-release) ]]; then
 
 	  sudo sh -c 'echo "\n" >> /boot/firmware/config.txt'
 
-else
-	echo "Your Pi OS version is not Bookworm."
+elif [[ $(grep 'trixie' /etc/os-release) ]]; then
+
+	echo "Trixie detected, installation continuing."
+	echo "Your Pi OS version is not Bookworm or Bullseye."
 	echo "The software installation will likely not work."
 	echo "See the README.md for how to install using Bookworm."
 	echo
@@ -232,9 +265,41 @@ fi
 FILE=/home/pi/CubeSatSim/sim.cfg
 if [ -f "$FILE" ]; then
     echo "$FILE exists."
+
+	changed=0
+	value=`cat /home/pi/CubeSatSim/sim.cfg`
+	# echo "$value"
+	echo "$value" > /dev/null
+	set -- $value
+	
+	if [ -z "$1" ] ; then n1="AMSAT" ; changed=1 ; else n1=$1 ; fi # callsign
+	if [ -z "$2" ] ; then n2="0" ; changed=1 ; else n2=$2 ; fi # reset count
+	if [ -z "$3" ] ; then n3="0" ; changed=1 ; else n3=$3 ; fi # lat
+	if [ -z "$4" ] ; then n4="0" ; changed=1 ; else n4=$4 ; fi # lon
+	if [ -z "$5" ] ; then n5="no" ; changed=1 ; else n5=$5 ; fi # sim mode
+	if [ -z "$6" ] ; then n6="3" ; changed=1 ; else n6=$6 ; fi # squelch
+	if [ -z "$7" ] ; then n7="434.9000" ; changed=1 ; else n7=$7 ; fi # transmit frequency
+	if [ -z "$8" ] ; then n8="435.0000" ; changed=1 ; else n8=$8 ; fi # receive frequency
+	if [ -z "$9" ] ; then n9="no" ; changed=1 ; else n9=$9 ; fi # hab mode
+	if [ -z "${10}" ] ; then m1="0" ; changed=1 ; else m1=${10} ; fi # rx pl code 
+	if [ -z "${11}" ] ; then m2="0" ; changed=1 ; else m2=${11} ; fi # tx pl code
+	if [ -z "${12}" ] ; then m3="no" ; changed=1 ; else m3=${12} ; fi # random fail
+	if [ -z "${13}" ] ; then m4="60" ; changed=1 ; else m4=${13} ; fi # random fail period
+
+	if [ $changed -eq 1 ]; then
+		echo -e "Current sim.cfg configuration file:"	
+		echo
+		echo $1 $2 $3 $4 $5 $6 $7 $8 $9 ${10} ${11} ${12} ${13}
+		echo -e "\nCubeSatSim configuration sim.cfg file updated to: \n"
+		echo
+		echo $n1 $n2 $n3 $n4 $n5 $n6 $n7 $n8 $n9 $m1 $m2 $m3 $m4
+		echo $n1 $n2 $n3 $n4 $n5 $n6 $n7 $n8 $n9 $m1 $m2 $m3 $m4> /home/pi/CubeSatSim/sim.cfg
+		echo
+	fi
+
 else 
     echo "creating $FILE"
-    echo "AMSAT 1 0.0 0.0" > /home/pi/CubeSatSim/sim.cfg
+    echo "AMSAT 0 0 0 no 3 434.9 435 no 0 0 no 60" > /home/pi/CubeSatSim/sim.cfg
 fi
 
 if [[ $(grep 'cubesatsim' /etc/motd) ]]; then
@@ -259,64 +324,84 @@ else
     echo "creating $FILE"
     echo "0\n" > /home/pi/CubeSatSim/command_count.txt
 fi
-
-touch /home/pi/CubeSatSim/command_control_direwolf
   
 sudo apt-get update && sudo apt-get dist-upgrade -y
 
-sudo apt-get remove pulseaudio -y
-
-sudo apt-get install -y gcc g++ make cmake libasound2-dev libudev-dev libavahi-client-dev libgpiod-dev raspi-config 
-
-# removed wiringpi and python-picamera python3-picamera 
-sudo apt-get install -y git libasound2-dev i2c-tools build-essential libgd-dev libmagic-dev minicom
-
-cd
+# if [ $BULLSEYE -eq 1 ]; then
+#	sudo apt purge -y python3-pip
+#	sudo apt install -y python3-pip
+# fi
 
-git clone https://github.com/alanbjohnston/direwolf.git
+if [ ! -d "/home/pi/venv" ]; then
 
-cd direwolf
+	cd
+	sudo apt install -y python3-venv
+	sudo python3 -m venv venv
+	source /home/pi/venv/bin/activate
+	
+	curl https://bootstrap.pypa.io/get-pip.py | sudo /home/pi/venv/bin/python3
+	
+	sudo /home/pi/venv/bin/pip3 install adafruit_extended_bus
+	sudo /home/pi/venv/bin/pip3 install adafruit-circuitpython-ina219
 
-make -j
+fi
 
-sudo make install
+sudo apt-get remove pulseaudio -y
 
-make install-rpi
+sudo apt-get install -y gcc g++ make cmake libasound2-dev libudev-dev libavahi-client-dev libgpiod-dev raspi-config 
 
-sudo apt-get install -y gpsd gpsd-clients libgps-dev python3-gps
+# removed wiringpi and python-picamera python3-picamera 
+sudo apt-get install -y git libasound2-dev i2c-tools build-essential libgd-dev libmagic-dev minicom
 
-sudo systemctl disable gpsd
-sudo systemctl disable gpsd.socket
+if [ ! -d "/home/pi/direwolf" ]; then
 
-cd /tmp
+	cd	
+	git clone https://github.com/alanbjohnston/direwolf.git
+	cd direwolf	
+	make -j
+	sudo make install	
+	make install-rpi
+fi
 
-# wget https://project-downloads.drogon.net/wiringpi-latest.deb
+	sudo apt-get install -y gpsd gpsd-clients libgps-dev python3-gps
+	sudo systemctl disable gpsd
+	sudo systemctl disable gpsd.socket
 
-# sudo dpkg -i wiringpi-latest.deb
+if [ ! -d "/home/pi/WiringPi" ]; then
+	cd
+	git clone https://github.com/alanbjohnston/WiringPi
+	cd WiringPi
+	./build debian
+	sudo dpkg -i debian-template/wiringpi-2.61-1.deb
+fi
 
 cd
 
-git clone https://github.com/alanbjohnston/WiringPi
-cd WiringPi
-./build debian
-
-sudo dpkg -i debian-template/wiringpi-2.61-1.deb
-
-cd
+if [ ! $BULLSEYE -eq 1 ]; then
+	sudo apt install -y libtiff6
+fi
 
-#changed to python3-smbus
+sudo apt install -y python3-pip python3-smbus libjpeg-dev zlib1g-dev libfreetype6-dev libopenjp2-7 python3-pil python3-serial libusb-1.0-0 libusb-1.0-0-dev
 
-sudo apt install -y libtiff6
+if [ $BULLSEYE -eq 1 ] || [ $UPDATE -eq 0 ] ; then
 
-sudo apt install -y python3-pip python3-smbus libjpeg-dev zlib1g-dev libfreetype6-dev libopenjp2-7 python3-pil python3-serial libusb-1.0-0 libusb-1.0-0-dev
+	sudo pip3 install --upgrade setuptools
+	
+	sudo pip3 install adafruit-blinka RPI.GPIO adafruit-extended-bus adafruit-circuitpython-ina219
 
-sudo pip3 install --upgrade setuptools
+fi
 
-sudo pip3 install adafruit-blinka RPI.GPIO adafruit-extended-bus adafruit-circuitpython-ina219
+cd /home/pi/CubeSatSim
 
-cd ~/CubeSatSim
+git pull --no-rebase > .updated
 
-git pull --no-rebase
+if [ $checkout -eq 1 ]; then
+	git checkout $branch	
+	git pull --no-rebase > .updated
+	FLAG=1
+	echo "Running update script again"
+	/home/pi/CubeSatSim/install
+fi
 
 make debug
 
@@ -328,156 +413,267 @@ else
     echo "b" > .mode
 fi
 
-cd
-
-git clone https://github.com/alanbjohnston/pi-power-button.git
+if [ ! -d "/home/pi/pi-power-button" ]; then
 
-cd pi-power-button
-
-git checkout master
+	cd
+	git clone https://github.com/alanbjohnston/pi-power-button.git
+	cd pi-power-button
+	git checkout master
+	./script/install	
+	sudo apt-get install -y libraspberrypi-dev
 
-./script/install
-
-sudo apt-get install -y libraspberrypi-dev
-
-cd
+fi
 
-echo "Installing SSDV for FUNcube mode"
-git clone https://github.com/alanbjohnston/ssdv.git  # install ssdv for FUNcube images
-cd ssdv
-make
-cd
+cd /home/pi/pi-power-button
 
-echo "Installing fctelem binary v0.2 for FUNcube mode"
-mkdir /home/pi/fctelem
-mkdir /home/pi/fctelem/public_html
-cd fctelem
-wget https://github.com/alanbjohnston/go/releases/download/v0.2/fctelem.zip
-unzip -u fctelem.zip
+git pull --no-rebase > .updated_p
+git checkout master
+grep 'changed' /home/pi/pi-power-button/.updated_p
+if [[ $(grep 'changed' /home/pi/pi-power-button/.updated_p) ]]; then
 
-cd
-echo "Installing fcdctl to set FUNcubeDongle Pro gain"
-# sudo rm /var/lib/dpkg/info/python3-pip.list
-# sudo apt install python3-pip --reinstall
-# sudo apt-get install -y python3-smbus libusb-1.0
-cd
-git clone https://github.com/csete/fcdctl.git
-cd fcdctl
-make fcdpp
+	echo "updating pi-power-button."
+	script/install
+	FLAG=1
+fi
 
 cd
 
-git clone https://github.com/alanbjohnston/PiSSTVpp.git
-
-cd PiSSTVpp
-
-make pisstvpp
-
-echo "Copying SSTV image 1"
-cp /home/pi/CubeSatSim/sstv/sstv_image_1_320_x_256.jpg /home/pi/CubeSatSim/sstv_image_1_320_x_256.jpg
+if [ ! -d "/home/pi/PiSSTVpp" ]; then
 
-echo "Copying SSTV image 2"
-cp /home/pi/CubeSatSim/sstv/sstv_image_2_320_x_256.jpg /home/pi/CubeSatSim/sstv_image_2_320_x_256.jpg
+  sudo apt-get update -y
+  sudo apt-get install -y python-picamera python3-picamera build-essential libgd-dev libmagic-dev
+  cd
+  git clone https://github.com/alanbjohnston/PiSSTVpp.git
+  cd PiSSTVpp
+  make pisstvpp
 
-cd
-
-git clone https://github.com/alanbjohnston/rpitx.git
-
-cd rpitx
+fi
 
-./install.sh
+if [ ! -d "/home/pi/rpitx" ]; then
 
-cd
+	cd
+	git clone https://github.com/alanbjohnston/rpitx.git
+	cd rpitx
+	./install.sh
+	cd
+else
 
-sudo cp ~/CubeSatSim/systemd/cubesatsim.service /etc/systemd/system/cubesatsim.service
+	if [[ $(grep 'SYNCWITHPWM'  /home/pi/rpitx/src/librpitx/src/fskburst.h) ]]; then
+	    echo "rpitx library already updated"
+	else
+	    echo "updating rpitx"
+	    cd  /home/pi/rpitx
+	    git pull
+	    ./update.sh
+	    cd
+	fi
+fi
 
-sudo systemctl enable cubesatsim
+FILE=/etc/systemd/system/cubesatsim.service
+if [ -f "$FILE" ]; then
+	if [[ $(diff /home/pi/CubeSatSim/systemd/cubesatsim.service /etc/systemd/system/cubesatsim.service) ]]; then
+	  echo "changed cubesatsim.service."
+	  sudo cp /home/pi/CubeSatSim/systemd/cubesatsim.service /etc/systemd/system/cubesatsim.service
+	  FLAG=1
+	else
+	  echo "no changes to cubesatsim.service."
+	fi
+else
+  echo "creating cubesatsim.service."
+  sudo cp /home/pi/CubeSatSim/systemd/cubesatsim.service /etc/systemd/system/cubesatsim.service
+  sudo systemctl enable command
 
-sudo cp ~/CubeSatSim/systemd/transmit.service /etc/systemd/system/transmit.service
+  FLAG=1
+fi
 
-# sudo systemctl enable transmit
+FILE=/etc/systemd/system/rpitx.service
+if [ -f "$FILE" ]; then
+  sudo systemctl disable rpitx
+  sudo rm /etc/systemd/system/rpitx.service
+fi
 
-sudo cp ~/CubeSatSim/systemd/command.service /etc/systemd/system/command.service
+FILE=/etc/systemd/system/transmit.service
+if [ -f "$FILE" ]; then
+  if [[ $(diff /home/pi/CubeSatSim/systemd/transmit.service /etc/systemd/system/transmit.service) ]]; then
+    echo "changed transmit.service."
+    sudo cp /home/pi/CubeSatSim/systemd/transmit.service /etc/systemd/system/transmit.service
+    FLAG=1
+  else
+    echo "no change to transmit.service."
+  fi
+else
+  echo "creating transmit.service."
+  sudo cp /home/pi/CubeSatSim/systemd/transmit.service /etc/systemd/system/transmit.service
+  FLAG=1
+fi
 
-sudo systemctl enable command
+FILE=/etc/systemd/system/command.service
+if [ -f "$FILE" ]; then
+  if [[ $(diff /home/pi/CubeSatSim/systemd/command.service /etc/systemd/system/command.service) ]]; then
+    echo "changed command.service."
+    sudo cp /home/pi/CubeSatSim/systemd/command.service /etc/systemd/system/command.service
+    FLAG=1
+  else
+    echo "no change to command.service."
+  fi
+else
+  echo "creating command.service."
+  sudo cp /home/pi/CubeSatSim/systemd/command.service /etc/systemd/system/command.service
+  sudo systemctl enable command
+  FLAG=1
+fi
 
-sudo cp /home/pi/CubeSatSim/asound.conf /etc/asound.conf
+FILE=/etc/asound.conf
+if [ -f "$FILE" ]; then
+  if [[ $(diff /home/pi/CubeSatSim/asound.conf /etc/asound.conf) ]]; then
+    echo "changed /etc/asound.conf."
+    sudo cp /home/pi/CubeSatSim/asound.conf /etc/asound.conf
+    FLAG=1
+  else
+    echo "no change to /etc/asound.conf."
+  fi
+else
+  echo "creating /etc/asound.conf."
+  sudo cp /home/pi/CubeSatSim/asound.conf /etc/asound.conf
+  FLAG=1
+fi
 
+FILE=/home/pi/CubeSatSim/sstv_image_1_320_x_256.jpg
+if [ ! -f "$FILE" ]; then
+    echo "Copying SSTV image 1."
+    cp /home/pi/CubeSatSim/sstv/sstv_image_1_320_x_256.jpg /home/pi/CubeSatSim/sstv_image_1_320_x_256.jpg
+fi
+    
+FILE=/home/pi/CubeSatSim/sstv_image_2_320_x_256.jpg
+if [ ! -f "$FILE" ]; then
+    echo "Copying SSTV image 2."
+    cp /home/pi/CubeSatSim/sstv/sstv_image_2_320_x_256.jpg /home/pi/CubeSatSim/sstv_image_2_320_x_256.jpg
+fi
 
 sudo sed -i 's/DEVICES=""/DEVICES="\/dev\/serial0"/g' /etc/default/gpsd
 
 sudo sed -i 's/GPSD_OPTIONS=""/GPSD_OPTIONS="-s 9600"/g' /etc/default/gpsd
 
-changed=0
-value=`cat /home/pi/CubeSatSim/sim.cfg`
-echo "$value" > /dev/null
-set -- $value
-
-if [ -z "$1" ] ; then n1="AMSAT" ; changed=1 ; else n1=$1 ; fi # callsign
-if [ -z "$2" ] ; then n2="0" ; changed=1 ; else n2=$2 ; fi # reset count
-if [ -z "$3" ] ; then n3="0" ; changed=1 ; else n3=$3 ; fi # lat
-if [ -z "$4" ] ; then n4="0" ; changed=1 ; else n4=$4 ; fi # lon
-if [ -z "$5" ] ; then n5="no" ; changed=1 ; else n5=$5 ; fi # sim mode
-if [ -z "$6" ] ; then n6="3" ; changed=1 ; else n6=$6 ; fi # squelch
-if [ -z "$7" ] ; then n7="434.9000" ; changed=1 ; else n7=$7 ; fi # transmit frequency
-if [ -z "$8" ] ; then n8="435.0000" ; changed=1 ; else n8=$8 ; fi # receive frequency
-if [ -z "$9" ] ; then n9="no" ; changed=1 ; else n9=$9 ; fi # hab mode
-if [ -z "${10}" ] ; then n10="0" ; changed=1 ; else n10=${10} ; fi # rx pl code 
-if [ -z "${11}" ] ; then n11="0" ; changed=1 ; else n11=${11} ; fi # tx pl code
-
-if [ $changed -eq 1 ]; then
-	echo -e "Current sim.cfg configuration file:"	
-	echo
-	echo $1 $2 $3 $4 $5 $6 $7 $8 $9 ${10} ${11}
-	echo -e "\nCubeSatSim configuration sim.cfg file updated to: \n"
-	echo
-	echo $n1 $n2 $n3 $n4 $n5 $n6 $n7 $n8 $n9 $n10 $n11
-	echo $n1 $n2 $n3 $n4 $n5 $n6 $n7 $n8 $n9 $n10 $n11 > /home/pi/CubeSatSim/sim.cfg
-	echo
+if [ ! -d "/home/pi/fctelem" ]; then
+	echo "Installing fctelem binary v0.2 for FUNcube mode"
+	cd
+	mkdir /home/pi/fctelem
+	mkdir /home/pi/fctelem/public_html
+	cd fctelem
+	wget https://github.com/alanbjohnston/go/releases/download/v0.2/fctelem.zip
+	unzip -u fctelem.zip
+	FLAG=1
+elif [ ! -f "/home/pi/fctelem/v0.2" ]; then
+	echo "Updating fctelem binary to version v0.2 for FUNcube mode"
+	cd
+	cd /home/pi/fctelem
+	sudo mv fctelem fctelem.bk
+	sudo mv fcdecode.conf fcdecode.conf.bk
+	sudo mv fctelem.zip fctelem.zip.1
+	wget https://github.com/alanbjohnston/go/releases/download/v0.2/fctelem.zip
+	unzip -u fctelem.zip
+	FLAG=1
 fi
 
-echo "Installing MPU6050-C-CPP-Library-for-Raspberry-Pi"
-sudo apt-get install -y libi2c-dev
-cd
-git clone https://github.com/alanbjohnston/MPU6050-C-CPP-Library-for-Raspberry-Pi.git
-cd MPU6050-C-CPP-Library-for-Raspberry-Pi
-sudo make install
-make payload
+if [ ! -f "/home/pi/MPU6050-C-CPP-Library-for-Raspberry-Pi/mpu6050" ]; then
+	echo "Installing MPU6050-C-CPP-Library-for-Raspberry-Pi"
+	sudo apt-get install -y libi2c-dev
+	cd
+	git clone https://github.com/alanbjohnston/MPU6050-C-CPP-Library-for-Raspberry-Pi.git
+	cd MPU6050-C-CPP-Library-for-Raspberry-Pi
+	sudo make install
+	make payload
+fi
 
-echo "Installing raspberry-pi-bme280"
-sudo apt-get install -y libi2c-dev
-cd
-git clone https://github.com/alanbjohnston/raspberry-pi-bme280.git
-cd raspberry-pi-bme280
-git checkout payload
-make 
+cd /home/pi/MPU6050-C-CPP-Library-for-Raspberry-Pi
+git checkout master
+git pull --no-rebase > .updated_p
 
-cd
-sudo apt install python3-venv
-sudo python3 -m venv venv
-source /home/pi/venv/bin/activate
+if [[ $(grep 'changed' /home/pi/MPU6050-C-CPP-Library-for-Raspberry-Pi/.updated_p) ]]; then
+	echo "updating MPU6050-C-CPP-Library-for-Raspberry-Pi"
+	sudo make install
+	make payload
+else
+	echo "nothing to do for MPU6050-C-CPP-Library-for-Raspberry-Pi."
+fi 
+
+if [ ! -f "/home/pi/raspberry-pi-bme280/bme280" ]; then
+	echo "Installing raspberry-pi-bme280"
+	sudo apt-get install -y libi2c-dev
+	cd
+	git clone https://github.com/alanbjohnston/raspberry-pi-bme280.git
+	cd raspberry-pi-bme280
+	git checkout payload
+	make 
+fi
 
-curl https://bootstrap.pypa.io/get-pip.py | sudo /home/pi/venv/bin/python3
+cd /home/pi/raspberry-pi-bme280
+git checkout payload
+git pull --no-rebase > .updated_p
 
-sudo /home/pi/venv/bin/pip3 install adafruit_extended_bus
-sudo /home/pi/venv/bin/pip3 install adafruit-circuitpython-ina219
+if [[ $(grep 'changed' /home/pi/raspberry-pi-bme280/.updated_p) ]]; then
 
-cd
+	echo "updating raspberry-pi-bme280"
+	make
+
+else
+	echo "nothing to do for raspberry-pi-bme280."
+fi 
+
+if [ ! -f "/home/pi/fcdctl/fcdctl" ]; then
+	echo "Installing fcdctl to set FUNcubeDongle Pro gain"
+	sudo rm /var/lib/dpkg/info/python3-pip.list
+	sudo apt install python3-pip --reinstall
+	sudo apt-get install -y python3-smbus libusb-1.0 
+	cd
+	git clone https://github.com/csete/fcdctl.git
+	cd fcdctl
+	make fcdpp
+fi
 
-CubeSatSim/config -c -n
+if [ ! -f "/home/pi/ssdv/ssdv" ]; then
+	cd
+	echo "Installing SSDV for FUNcube mode"
+	git clone https://github.com/alanbjohnston/ssdv.git  # install ssdv for FUNcube images
+	cd ssdv
+	make
+fi
 
-CubeSatSim/config -l -n
+cd
 
-echo "Would you like to reboot to complete the installation (y/n)?"
+#echo "Would you like to reboot to complete the installation (y/n)?"
 
-read -r ANS
+#read -r ANS
 
-if [ "$ANS" = "y" ]; then
+#if [ "$ANS" = "y" ]; then
 
-    sudo reboot now
+#    sudo reboot now
 
-else
+#else
 
-    echo "The CubeSatSim software will start next time you reboot"
+ #   echo "The CubeSatSim software will start next time you reboot"
     
+#fi
+
+if [ "$noreboot" = "0" ] ; then  
+
+	if [ $FLAG -eq 1 ]; then
+	  echo "systemctl daemon-reload and reboot"
+	  sudo systemctl daemon-reload 
+	  sudo reboot -h now
+#  sudo  cubesatsim
+	else
+	  grep 'changed' /home/pi/CubeSatSim/.updated
+	  if [[ $(grep 'changed' /home/pi/CubeSatSim/.updated) ]]; then
+	    echo "reboot due to code changes " | wall
+	    sudo reboot -h now
+#    sudo  cubesatsim
+	  else
+	    echo "nothing to do."
+	  fi  
+	fi
+else
+	if [ $FLAG -eq 1 ]; then
+		echo "reboot needed for changes to take effect" | wall
+	fi
 fi
diff --git a/transmit.py b/transmit.py
index 9a249d82..0ba37e65 100644
--- a/transmit.py
+++ b/transmit.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 
-import RPi.GPIO as GPIO
-from RPi.GPIO import output
+#import RPi.GPIO as GPIO
+#from RPi.GPIO import output
 #import subprocess
 import time
 from time import sleep
@@ -14,6 +14,43 @@ import serial
 import random
 import subprocess
 
+def output(pin, value):
+	command = "gpio -g write " + str(pin) + " " + str(value)
+	system(command)
+	print(command)
+
+def input(pin):
+	# command = "gpio -g read " + str(pin)
+	query = ["gpio", "-g", "read", str(pin)] # Read GPIO pin
+	try:
+		result = subprocess.run(query, capture_output=True, text=True, check=True)
+		print(f"Command run was: {query}")
+		print("Sucess!")
+		print(f"Output of the command (stdout): {result.stdout}")
+		return int(result.stdout)
+	except subprocess.CalledProcessError as e:
+		print(f"Command failed with return code: {e.returncode}")
+		print(f"Command run was: {e.cmd}")
+		print(f"Output of the command (stdout): {e.stdout}")
+		print(f"Error output of the command (stderr): {e.stderr}")
+		return -1
+
+def setup(pin, config):
+	if config == "in" or config == "out" or config == "up" or config == "down":
+		command = "gpio -g mode " + str(pin) + " " + config
+		system(command)
+		print(command)
+	else:
+		print(f"Unknown GPIO setup configuration: {config}")
+
+def blink(times):
+	powerPin = 16
+	for i in range(times):
+		system("gpio -g write " + str(powerPin) + " 0") # blink two times
+		sleep(0.1)
+		system("gpio -g write " + str(powerPin) + " 1")
+		sleep(0.1)
+
 def sim_failure_check():
 	try:
 		global card
@@ -46,7 +83,6 @@ def sim_failure_check():
 	except:
 		print("No failure mode")
 		card = "Headphones"
-#		card = "Device"		
 		if sim_config:
 			sim_mode = True
 
@@ -65,9 +101,9 @@ def battery_saver_check():
 def blink(times):
 	powerPin = 16
 	for i in range(times):
-		system("gpio -g write " + str(powerPin) + " 0") # blink two times
+		output(powerPin, 0) # blink 
 		sleep(0.1)
-		system("gpio -g write " + str(powerPin) + " 1")
+		output(powerPin, 1)
 		sleep(0.1)
 		
 def increment_mode():
@@ -114,13 +150,13 @@ def increment_mode():
 		file.close()
 		print(".mode file written")
 		
-		GPIO.setwarnings(False)
-		system("gpio -g write " + str(txLed) + " 0")
-		system("gpio -g write " + str(powerPin) + " 0")
+#		GPIO.setwarnings(False)
+		output(txLed, 0)
+		output(powerPin, 0)
 		print("sudo reboot -h now")
-		GPIO.setwarnings(False)
-		system("gpio -g mode " + str(powerPin) + " out")
-		system("gpio -g write " + str(powerPin) + " 0");
+#		GPIO.setwarnings(False)
+		setup(powerPin, "out")
+		output(powerPin, 0);
 #		system("reboot -h now")
 #		release = True;
 
@@ -181,7 +217,7 @@ def camera_photo():
 		return True
 	else:
 		return False
-
+		
 print("CubeSatSim v2.2 transmit.py starting...")
 
 pd = 21
@@ -193,70 +229,52 @@ powerPin = 16
 
 command_tx = True
 
-try:
-	system("gpio -g write " + str(powerPin) + " 1")
-	GPIO.setmode(GPIO.BCM)
-	GPIO.setwarnings(False)
-	GPIO.setup(13, GPIO.IN, pull_up_down=GPIO.PUD_UP)
-	GPIO.setup(12, GPIO.IN, pull_up_down=GPIO.PUD_UP)
-	GPIO.setup(txc_pin, GPIO.IN, pull_up_down=GPIO.PUD_UP)
-	GPIO.setup(green, GPIO.OUT)
-	GPIO.setup(27, GPIO.IN)
-except:
-	print("gpio setup problem")
-	system("gpio -g mode 27 IN")
-try:	
-	GPIO.setup(27, GPIO.IN, pull_up_down=GPIO.PUD_UP)
-except:
-	print("Can't set txLed")
+# GPIO.setmode(GPIO.BCM)
+# GPIO.setwarnings(False)
+setup(13, "up")
+setup(12, "up")
+setup(27, "up")
+setup(txc_pin, "up")
+setup(green, "out")
+output(powerPin, 1)
 
 transmit = False
 txLed = 27
-# txLed = 17
-txLedOn = 1 
-txLedOff = 0
-if GPIO.input(12) == False:
+if input(12) == False:
 	print("LPF present")
 	transmit = True
 else:
 	print("No LPF")
 
 
-# system("gpio -g mode " + str(txLed) + " out")
-# system("gpio -g write " + str(txLed) + " 0")
+# GPIO.setup(txLed, GPIO.OUT)
+# output(txLed, 0)
 
-GPIO.setmode(GPIO.BCM) # Repeat to make LED work on Pi 4
-GPIO.setwarnings(False)
-try:
-	system("gpio -g mode " + str(txLed) + " out")
-except:
-	print("Can't set txLed")
+# GPIO.setmode(GPIO.BCM) # Repeat to make LED work on Pi 4
+# GPIO.setwarnings(False)
+setup(txLed, "out")
 
-GPIO.setup(pd, GPIO.OUT)
+setup(pd, "out")
 #output(pd, 1)
 output(pd, 0)
-GPIO.setup(ptt, GPIO.OUT)
+setup(ptt, "out")
 output (ptt, 1)
 
 txc = False
-if GPIO.input(txc_pin) == False:
+if input(txc_pin) == False:
 	print("TXC is present")
 	txc = True;
 else:
 	print("TXC not present")
 
 # txc = False  # forcing it off
-
-try:
-	system("gpio -g write " + str(txLed) + " 1")	
-	sleep(1)
-	system("gpio -g write " + str(txLed) + " 0")
-except:
-	print("Can't set txLed")
+output(txLed, 1)
+sleep(1)
+output(txLed, 0)
 
 battery_saver_check()	
 
-# print(txLedOn)
+# print(1)
 print(txLed)
 # GPIO.setup(27, GPIO.OUT)
 # GPIO.output(27, 0)
@@ -440,10 +458,10 @@ if __name__ == "__main__":
 	try:
 		f = open("/home/pi/CubeSatSim/command_control", "r")
 		f.close()
-		GPIO.setmode(GPIO.BCM)
-		GPIO.setwarnings(False)
-		GPIO.setup(squelch, GPIO.IN, pull_up_down=GPIO.PUD_UP)  ## pull up in case pin is not connected
-		if GPIO.input(squelch) == False:
+#		GPIO.setmode(GPIO.BCM)
+#		GPIO.setwarnings(False)
+		setup(squelch, "up")  ## pull up in case pin is not connected
+		if input(squelch) == False:
 			print("squelch not set correctly, no command input!")
 		else:
 			if (mode != 'n') and (mode != 'x'):
@@ -458,16 +476,10 @@ if __name__ == "__main__":
 
 	
 	print(callsign)
-	GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi 4
-	try:
-		print(txLed)
-		print(txLedOn)
-		system("gpio -g mode " + str(txLed) + " out")
-	except:
-		print("Can't set txLed")
-
-#	card = "Headphones"  # default using pcm audio output of Pi Zero
-	card = "Device" # using USB sound card for audio output	
+#	GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi 4
+#	print(txLed)
+#	print(1)
+#	setup(txLed, "out")
 
 	query = ["grep", "VERSION_CODENAME=bullseye", "/etc/os-release"] 
 	try:
@@ -486,6 +498,9 @@ if __name__ == "__main__":
 	else:
 		os_status = "bullseye"
 	print (os_status)
+	
+	card = "Headphones"  # default using pcm audio output of Pi Zero
+#	card = "Device" # using USB sound card for audio output	
 
 	query = ["sudo", "systemctl", "is-active", "gpsd.socket"]
 	try:
@@ -532,12 +547,9 @@ if __name__ == "__main__":
 		print("Don't transmit CW ID since APRS HAB mode is active")
 	else:	
 		if (((mode == 'a') or (mode == 'b') or (mode == 'f') or (mode == 's') or (mode == 'j')) and (command_tx == True) and (skip == False)) or ((mode == 'e') and (command_tx == True)):	#		battery_saver_mode
-			GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi Zero 2 and Pi 4	
-			try:
-				system("gpio -g mode " + str(txLed) + " out")	
-				system("gpio -g write " + str(txLed) + " 1")	
-			except:
-				print("Can't set txLed")
+#			GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi Zero 2 and Pi 4		
+#			setup(txLed, "out")	
+			output(txLed, 1)
 			print("Transmit CW ID")
 			status = ""
 			if not no_command:
@@ -548,10 +560,7 @@ if __name__ == "__main__":
 				system("echo 'hi hi de " + callsign + status + "' > id.txt && gen_packets -M 20 /home/pi/CubeSatSim/id.txt -o /home/pi/CubeSatSim/morse.wav -r 48000 > /dev/null 2>&1 && cat /home/pi/CubeSatSim/morse.wav | csdr convert_i16_f | csdr gain_ff 7000 | csdr convert_f_samplerf 20833 | sudo /home/pi/rpitx/rpitx -i- -m RF -f " + tx + "e3")
 			else:
 				system("echo 'hi hi de " + callsign + status + "' > id.txt && gen_packets -M 20 /home/pi/CubeSatSim/id.txt -o /home/pi/CubeSatSim/morse.wav -r 48000 > /dev/null 2>&1 && cat /home/pi/CubeSatSim/morse.wav | csdr convert_i16_f | csdr gain_ff 7000 | csdr convert_f_samplerf 20833 | sudo /home/pi/rpitx/rpitx -i- -m RF -f " + tx + "e3 > /dev/null 2>&1")
-			try:
-				system("gpio -g write " + str(txLed) + " 0")
-			except:
-				print("Can't set txLed")
+			output(txLed, 0)
 	
 			sleep(1)
 		else:
@@ -570,7 +579,7 @@ if __name__ == "__main__":
 			if (mode == 'a'):
 				print("AFSK")
 			else:
-#				system("gpio -g write " + str(powerPin) + " 0")
+#				GPIO.output(powerPin, 0)
 				print("Transmit APRS Commands")
 				system("sudo systemctl stop command")
 #			while True:
@@ -587,12 +596,9 @@ if __name__ == "__main__":
 					system("gen_packets -o /home/pi/CubeSatSim/telem.wav /home/pi/CubeSatSim/t.txt -r 48000 > /dev/null 2>&1")
 					system("cat /home/pi/CubeSatSim/t.txt")
 					if (command_tx == True):
-						GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi Zero 2 and Pi 4	
-						try:
-							system("gpio -g mode " + str(txLed) + " out")	
-							system("gpio -g write " + str(txLed) + " 1")	
-						except:
-							print("Can't set txLed")
+#						GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi Zero 2 and Pi 4		
+#						setup(txLed, "out")	
+						output(txLed, 1)
 #						output(pd, 1)
 #						output (ptt, 0)
 #						sleep(.1)
@@ -618,10 +624,7 @@ if __name__ == "__main__":
 						sleep(0.1)  
 #						output (ptt, 1)
 #						output(pd, 0)
-						try:
-							system("gpio -g write " + str(txLed) + " 0")
-						except:
-							print("Can't set txLed")	
+						output(txLed, 0)
 						system("sudo rm /home/pi/CubeSatSim/ready")
 					f.close()
 				
@@ -651,12 +654,9 @@ if __name__ == "__main__":
 						system(command)
 ##						chan = chan + 1						
 						if (command_tx == True):
-							GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi Zero 2 and Pi 4		
-							system("gpio -g mode " + str(txLed) + " out")	
-							try:
-								system("gpio -g write " + str(txLed) + " 1")	
-							except:
-								print("Can't set txLed")	
+#							GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi Zero 2 and Pi 4		
+#							setup(txLed, "out")	
+							output(txLed, 1)					
 	
 							if (txc):
 								sim_failure_check()
@@ -672,10 +672,7 @@ if __name__ == "__main__":
 									system("cat /home/pi/CubeSatSim/morse.wav | csdr convert_i16_f | csdr gain_ff 7000 | csdr convert_f_samplerf 20833 | sudo /home/pi/rpitx/rpitx -i- -m RF -f " + tx + "e3")
 								else:
 									system("cat /home/pi/CubeSatSim/morse.wav | csdr convert_i16_f | csdr gain_ff 7000 | csdr convert_f_samplerf 20833 | sudo /home/pi/rpitx/rpitx -i- -m RF -f " + tx + "e3 > /dev/null 2>&1")					
-							try:
-								system("gpio -g write " + str(txLed) + " 0")
-							except:
-								print("Can't set txLed")	
+							output(txLed, 0)
 							
 #						command_control_check()
 						sleep(2)
@@ -688,21 +685,28 @@ if __name__ == "__main__":
 			print("SSTV")
 #			command_control_check()	
 			output (ptt, 1)
-			output(pd, 1)	
-			
-			print("Testing for camera")
-			if camera_photo():
+			output(pd, 1)			
+			try: 
+#				from picamera import PiCamera
+#					from pysstv.sstv import SSTV
+#				camera = PiCamera()
+				print("Testing for camera")
+				if os_status == "bookworm":
+					system("rpicam-still -o /home/pi/CubeSatSim/camera_out.jpg --width 320 --height 256") #  > /dev/null 2>&1")
+				else:
+					system("raspistill -o /home/pi/CubeSatSim/camera_out.jpg -w 320 -h 256")				
+				f = open("/home/pi/CubeSatSim/camera_out.jpg")
+				f.close()
+				print("Camera present")
 				camera_present = 1
-				print("camera present")
-			else:
-				camera_present = 0
+#				camera.close()
+			except:
 				print("No camera available")
 				print(" -> if camera plugged in, is software enabled?")
-				
-			try:
-				system("gpio -g write " + str(txLed) + " 0")
-			except:
-				print("Can't set txLed")	
+				camera_present = 0
+
+#				while 1:
+			output(txLed, 0)
 #			output (ptt, 1)
 #			output(pd, 0)
 			if (camera_present == 1):
@@ -714,12 +718,9 @@ if __name__ == "__main__":
 					
 					if (command_tx == True):
 						print ("Sending SSTV image")
-						GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi Zero 2 and Pi 4
-						try:
-							system("gpio -g mode " + str(txLed) + " out")	
-							system("gpio -g write " + str(txLed) + " 1")	
-						except:
-							print("Can't set txLed")
+#						GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi Zero 2 and Pi 4		
+#						setup(txLed, "out")	
+						output(txLed, 1)
 #						battery_saver_check()
 
 						if (txc):
@@ -735,11 +736,8 @@ if __name__ == "__main__":
 							else:
 								system("cat /home/pi/CubeSatSim/sstv_image_2_320_x_256.jpg.wav | csdr convert_i16_f | csdr gain_ff 14000 | csdr convert_f_samplerf 20833 | sudo rpitx -i- -m RF -f " + tx + "e3 > /dev/null 2>&1")
 
-						try:
-							system("gpio -g write " + str(txLed) + " 0")
-						except:
-							print("Can't set txLed")	
-	
+						output(txLed, 0)
+
 	#					sleep(1)
 				except:
 					print("image 2 did not load - copy from CubeSatSim/sstv directory")
@@ -753,12 +751,9 @@ if __name__ == "__main__":
 
 					if (command_tx == True):
 						print ("Sending SSTV image")
-						GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi Zero 2 and Pi 4
-						try:
-							system("gpio -g mode " + str(txLed) + " out")	
-							system("gpio -g write " + str(txLed) + " 1")	
-						except:
-							print("Can't set txLed")
+#						GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi Zero 2 and Pi 4		
+#						setup(txLed, "out")	
+						output(txLed, 1)
 #						battery_saver_check()
 
 						if (txc):
@@ -774,10 +769,8 @@ if __name__ == "__main__":
 								system("cat /home/pi/CubeSatSim/camera_out.jpg.wav | csdr convert_i16_f | csdr gain_ff 14000 | csdr convert_f_samplerf 20833 | sudo rpitx -i- -m RF -f " + tx + "e3")
 							else:
 								system("cat /home/pi/CubeSatSim/camera_out.jpg.wav | csdr convert_i16_f | csdr gain_ff 14000 | csdr convert_f_samplerf 20833 | sudo rpitx -i- -m RF -f " + tx + "e3 > /dev/null 2>&1")
-						try:
-							system("gpio -g write " + str(txLed) + " 0")
-						except:
-							print("Can't set txLed")	
+
+						output(txLed, 0)
 #						output (ptt, 1)
 					
 #					output(pd, 0)
@@ -796,12 +789,9 @@ if __name__ == "__main__":
 					if (command_tx == True):
 
 						print ("Sending SSTV image")
-						GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi Zero 2 and Pi 4	
-						try:
-							system("gpio -g mode " + str(txLed) + " out")	
-							system("gpio -g write " + str(txLed) + " 1")	
-						except:
-							print("Can't set txLed")	
+#						GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi Zero 2 and Pi 4		
+#						setup(txLed, "out")	
+						output(txLed, 1)
 
 #						battery_saver_check()
 
@@ -817,10 +807,8 @@ if __name__ == "__main__":
 								system("cat /home/pi/CubeSatSim/sstv_image_1_320_x_256.jpg.wav | csdr convert_i16_f | csdr gain_ff 14000 | csdr convert_f_samplerf 20833 | sudo rpitx -i- -m RF -f " + tx + "e3")
 							else:
 								system("cat /home/pi/CubeSatSim/sstv_image_1_320_x_256.jpg.wav | csdr convert_i16_f | csdr gain_ff 14000 | csdr convert_f_samplerf 20833 | sudo rpitx -i- -m RF -f " + tx + "e3 > /dev/null 2>&1")
-						try:
-							system("gpio -g write " + str(txLed) + " 0")
-						except:
-							print("Can't set txLed")	
+
+						output(txLed, 0)
 #						output (ptt, 1)
 #						output(pd, 0)
 					sleep(1)
@@ -839,12 +827,9 @@ if __name__ == "__main__":
 	
 						if (command_tx == True):
 							print ("Sending SSTV image")
-							try:
-								GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi Zero 2 and Pi 4		
-								system("gpio -g mode " + str(txLed) + " out")	
-								system("gpio -g write " + str(txLed) + " 1")	
-							except:
-								print("Can't set txLed")	
+#							GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi Zero 2 and Pi 4		
+#							setup(txLed, "out")	
+							output(txLed, 1)
 #							battery_saver_check()
 
 							if (txc):
@@ -859,10 +844,8 @@ if __name__ == "__main__":
 									system("cat /home/pi/CubeSatSim/sstv_image_2_320_x_256.jpg.wav | csdr convert_i16_f | csdr gain_ff 14000 | csdr convert_f_samplerf 20833 | sudo rpitx -i- -m RF -f " + tx + "e3") 
 								else:
 									system("cat /home/pi/CubeSatSim/sstv_image_2_320_x_256.jpg.wav | csdr convert_i16_f | csdr gain_ff 14000 | csdr convert_f_samplerf 20833 | sudo rpitx -i- -m RF -f " + tx + "e3 > /dev/null 2>&1")
-							try:
-								system("gpio -g write " + str(txLed) + " 0")
-							except:
-								print("Can't set txLed")	
+
+							output(txLed, 0)
 #							output (ptt, 1)
 #							output(pd, 0)
 						sleep(10)
@@ -875,12 +858,9 @@ if __name__ == "__main__":
 						if (command_tx == True):
 #							command_control_check()	
 							
-							GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi Zero 2 and Pi 4	
-							try:
-								system("gpio -g mode " + str(txLed) + " out")	
-								system("gpio -g write " + str(txLed) + " 1")	
-							except:
-								print("Can't set txLed")	
+#							GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi Zero 2 and Pi 4		
+#							setup(txLed, "out")	
+							output(txLed, 1)
 
 #							battery_saver_check()
 						
@@ -893,10 +873,8 @@ if __name__ == "__main__":
 #								output (pd, 0)		
 							else:
 								sleep(60)
-							try:
-								system("gpio -g write " + str(txLed) + " 0")
-							except:
-								print("Can't set txLed")	
+							
+							output(txLed, 0)
 #							output (ptt, 1)
 #							output(pd, 0)
 						sleep(10)
@@ -910,11 +888,9 @@ if __name__ == "__main__":
 			print("turn on FM rx")
 			output(pd, 1)
 			output(ptt, 1)
-			try:	
-				GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi 4
-				system("gpio -g mode " + str(txLed) + " out")
-			except:
-				print("Can't set txLed")	
+
+#			GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi 4
+#			setup(txLed, "out")
 			
 			if (command_tx == True):
 #				system("sudo nc -l 8080 | csdr convert_i16_f | csdr fir_interpolate_cc 2 | csdr dsb_fc | csdr bandpass_fir_fft_cc 0.002 0.06 0.01 | csdr fastagc_ff | sudo /home/pi/rpitx/sendiq -i /dev/stdin -s 96000 -f 434.9e6 -t float &")
@@ -924,26 +900,20 @@ if __name__ == "__main__":
 			print("Initial image_id: " + str(image_id) + "\n")
 			while 1:
 #				print ("LED on")
-				try:
-					system("gpio -g write " + str(txLed) + " 0")
-				except:
-					print("Can't set txLed")	
+				output(txLed, 0)
 				sleep(0.4)
 #				if (command_tx == False):
-#					system("gpio -g write " + str(txLed) + " 1")	
+#					output(txLed, 1)
 #					sleep(0.03)
-#					system("gpio -g write " + str(txLed) + " 0")
+#					output(txLed, 0)
 #				command_control_check()
 				
 				if (command_tx == True):		
-					GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi Zero 2 and Pi 4	
-					try:
-						system("gpio -g mode " + str(txLed) + " out")
-						system("gpio -g write " + str(txLed) + " 1")	
-					except:
-						print("Can't set txLed")	
+#					GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi Zero 2 and Pi 4		
+#					setup(txLed, "out")
+					output(txLed, 1)
 #					print(txLed)
-#					print(txLedOn)
+#					print(1)
 
 				if (mode == 'b'):
 					sleep(4.2)	
@@ -979,14 +949,11 @@ if __name__ == "__main__":
 			print("turn on FM rx")
 			output(pd, 1)
 			output(ptt, 1)
-			GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi 4
-			try:
-				system("gpio -g mode " + str(txLed) + " out")
-			except:
-				print("Can't set txLed")	
-#			system("gpio -g mode " + str(powerPin) + " out")
-			GPIO.setup(squelch, GPIO.IN, pull_up_down=GPIO.PUD_UP)  ## pull up in case pin is not connected	
-#			system("gpio -g write " + str(powerPin) + " 1")  # was 0
+#			GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi 4
+#			setup(txLed, "out")
+#			GPIO.setup(powerPin, GPIO.OUT)
+			setup(squelch, "up")  ## pull up in case pin is not connected	
+#			GPIO.output(powerPin, 1)  # was 0
 #			txf = float(tx) - 288.9
 #			print("Transmit frequency: ",txf)
 			if (command_tx != True):
@@ -994,24 +961,18 @@ if __name__ == "__main__":
 
 			print("Ready to detect carrier")
 			while True:
-				if (GPIO.input(squelch) == False) and (command_tx == True):
+				if (input(squelch) == False) and (command_tx == True):
 					print("Carrier detected, starting repeater")
-					GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi Zero 2 and Pi 4	
-					try:
-						system("gpio -g mode " + str(txLed) + " out")						
-						system("gpio -g write " + str(txLed) + " 1")	
-					except:
-						print("Can't set txLed")	
+#					GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi Zero 2 and Pi 4		
+#					setup(txLed, "out")						
+					output(txLed, 1)
 					system("sudo nc -l 8011 | csdr convert_i16_f | csdr gain_ff 16000 | csdr convert_f_samplerf 20833 | sudo rpitx -i- -m RF -f " + tx + "e3 > /dev/null 2>&1 &")
 					sleep(0.5)
 					system("sudo arecord -D shared_mic -r48000 -fS16_LE -c1 | nc localhost 8011 &")
-					while (GPIO.input(squelch) == False):
+					while (input(squelch) == False):
 						sleep(1)
 					print("No carrier detected, stopping repeater")
-					try:
-						system("gpio -g write " + str(txLed) + " 0")
-					except:
-						print("Can't set txLed")	
+					output(txLed, 0)
 					system("sudo rpitx -i null > /dev/null 2>&1")
 					system("sudo killall -9 arecord > /dev/null 2>&1")
 					system("sudo killall -9 nc > /dev/null 2>&1")
@@ -1026,36 +987,27 @@ if __name__ == "__main__":
 			print("turn on FM rx")
 			output(pd, 1)
 			output(ptt, 1)
-
-			try:
-				GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi 4
-				system("gpio -g mode " + str(txLed) + " out")
-			except:
-				print("Can't set txLed")
+			
+#			GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi 4
+#			setup(txLed, "out")
 			
 			if (command_tx == True):
 				system("sudo nc -l 8080 | csdr convert_i16_f | csdr gain_ff 7000 | csdr convert_f_samplerf 20833 | sudo /home/pi/rpitx/rpitx -i- -m RF -f " + tx + "e3 &")
 			print("Turning LED on/off and listening for carrier")
 			while 1:
-				try:
-					system("gpio -g write " + str(txLed) + " 0")
-				except:
-					print("Can't set txLed")	
+				output(txLed, 0)
 				sleep(0.4)
 #				if (command_tx == False):
-#					system("gpio -g write " + str(txLed) + " 1")	
+#					output(txLed, 1)
 #					sleep(0.03)
-#					system("gpio -g write " + str(txLed) + " 0")
+#					output(txLed, 0)
 #				command_control_check()
-				if (command_tx == True):	
-					try:
-						GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi Zero 2 and Pi 4		
-						system("gpio -g mode " + str(txLed) + " out")					
-						system("gpio -g write " + str(txLed) + " 1")	
-					except:
-						print("Can't set txLed")	
+				if (command_tx == True):		
+#					GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi Zero 2 and Pi 4		
+#					setup(txLed, "out")					
+					output(txLed, 1)
 #					print(txLed)
-#					print(txLedOn)					
+#					print(1)					
 				sleep(4.2)
 	else:
 		print("No Low Pass Filter so no telemetry transmit.  See http://cubesatsim.org/wiki for instructions on how to build the LPF.")
diff --git a/update b/update
deleted file mode 100755
index 4fe1187a..00000000
--- a/update
+++ /dev/null
@@ -1,481 +0,0 @@
-#!/bin/bash
-
-echo -e "\nupdate script for CubeSatSim v2.2\n"
-
-FLAG=0
-checkout=0
-
-if [ -z "$1" ] ; then
-	checkout=0
-else
-	checkout=1
-	branch="$1"
-	echo -n "changing to branch "
-	echo $branch
-	FLAG=1
-fi
-
-if [ "$1" = "n" ] ; then
-	noreboot=1
-else
-	noreboot=0
-fi
-
-# echo "No reboot"
-# echo $noreboot
-
-sudo rm /home/pi/CubeSatSim/morse.wav /home/pi/CubeSatSim/id.txt /home/pi/CubeSatSim/cw.txt > /dev/null 2>&1 
-
-#if [ "$1" = "u" ]; then
-
-#  sudo apt-get update && sudo apt-get dist-upgrade -y
-  sudo apt-get update -y
-
-  sudo apt-get install -y git libasound2-dev i2c-tools build-essential libgd-dev libmagic-dev python3-pip minicom gpsd gpsd-clients libgps-dev python3-gps
-
-#fi
-
-sudo apt-get install -y gpsd gpsd-clients libgps-dev python3-gps
-
-# sudo apt-get install -y python3-smbus libusb-1.0
-
-sudo sed -i 's/update.sh/update /g' /etc/motd
-
-sudo sed -i 's/installed and/installed\nand/g' /etc/motd
-
-sudo sed -i 's/more information/more\ninformation/g' /etc/motd
-
-sudo sed -i 's/update to/update\nto/g' /etc/motd
-
-sudo sed -i 's/console=tty1 r/console=tty1 maxcpus=1 r/g' /boot/cmdline.txt # single core if Pi Zero 2
-
-sudo sed -i 's/maxcpus=2/maxcpus=1/g' /boot/cmdline.txt # single core if Pi Zero 2
-
-sudo sed -i 's/DEVICES=""/DEVICES="\/dev\/serial0"/g' /etc/default/gpsd
-
-sudo sed -i 's/GPSD_OPTIONS=""/GPSD_OPTIONS="-s 9600"/g' /etc/default/gpsd
-
-sudo systemctl disable gpsd > /dev/null 2>&1 
-sudo systemctl disable gpsd.socket > /dev/null 2>&1 
-
-cd /home/pi/CubeSatSim
-
-git pull --no-rebase > .updated
-
-if [ $checkout -eq 1 ]; then
-	git checkout $branch	
-	git pull --no-rebase > .updated
-	FLAG=1
-	echo "Running update script again"
-	/home/pi/CubeSatSim/update
-fi
-
-make debug
-
-FILE=/home/pi/CubeSatSim/command_tx
-if [ -f "$FILE" ]; then
-    echo "$FILE exists."
-else 
-    echo "creating $FILE"
-    echo "True\n" > /home/pi/CubeSatSim/command_tx
-fi
-
-FILE=/home/pi/CubeSatSim/command_count.txt
-if [ -f "$FILE" ]; then
-    echo "$FILE exists."
-else 
-    echo "creating $FILE"
-    echo "0\n" > /home/pi/CubeSatSim/command_count.txt
-fi
-
-if [[ $(diff systemd/cubesatsim.service /etc/systemd/system/cubesatsim.service) ]]; then
-  echo "changed cubesatsim.service."
-  sudo cp /home/pi/CubeSatSim/systemd/cubesatsim.service /etc/systemd/system/cubesatsim.service
-  FLAG=1
-else
-  echo "no changes to cubesatsim.service."
-fi
-
-FILE=/etc/systemd/system/rpitx.service
-if [ -f "$FILE" ]; then
-  sudo systemctl disable rpitx
-  sudo rm /etc/systemd/system/rpitx.service
-fi
-
-FILE=/etc/systemd/system/transmit.service
-if [ -f "$FILE" ]; then
-  if [[ $(diff systemd/transmit.service /etc/systemd/system/transmit.service) ]]; then
-    echo "changed transmit.service."
-    sudo cp /home/pi/CubeSatSim/systemd/transmit.service /etc/systemd/system/transmit.service
-    FLAG=1
-  else
-    echo "no change to transmit.service."
-  fi
-else
-  echo "creating transmit.service."
-  sudo cp /home/pi/CubeSatSim/systemd/transmit.service /etc/systemd/system/transmit.service
-  FLAG=1
-fi
-
-FILE=/etc/systemd/system/command.service
-if [ -f "$FILE" ]; then
-  if [[ $(diff systemd/command.service /etc/systemd/system/command.service) ]]; then
-    echo "changed command.service."
-    sudo cp /home/pi/CubeSatSim/systemd/command.service /etc/systemd/system/command.service
-    FLAG=1
-  else
-    echo "no change to command.service."
-  fi
-else
-  echo "creating command.service."
-  sudo cp /home/pi/CubeSatSim/systemd/command.service /etc/systemd/system/command.service
-  sudo systemctl enable command
-  FLAG=1
-fi
-
-FILE=/etc/asound.conf
-if [ -f "$FILE" ]; then
-  if [[ $(diff /home/pi/CubeSatSim/asound.conf /etc/asound.conf) ]]; then
-    echo "changed /etc/asound.conf."
-    sudo cp /home/pi/CubeSatSim/asound.conf /etc/asound.conf
-    FLAG=1
-  else
-    echo "no change to /etc/asound.conf."
-  fi
-else
-  echo "creating /etc/asound.conf."
-  sudo cp /home/pi/CubeSatSim/asound.conf /etc/asound.conf
-  FLAG=1
-fi
-
-FILE=/home/pi/CubeSatSim/sstv_image_1_320_x_256.jpg
-if [ ! -f "$FILE" ]; then
-    echo "Copying SSTV image 1."
-    cp /home/pi/CubeSatSim/sstv/sstv_image_1_320_x_256.jpg /home/pi/CubeSatSim/sstv_image_1_320_x_256.jpg
-fi
-    
-FILE=/home/pi/CubeSatSim/sstv_image_2_320_x_256.jpg
-if [ ! -f "$FILE" ]; then
-    echo "Copying SSTV image 2."
-    cp /home/pi/CubeSatSim/sstv/sstv_image_2_320_x_256.jpg /home/pi/CubeSatSim/sstv_image_2_320_x_256.jpg
-fi
-
-grep 'update' /home/pi/CubeSatSim/.updated
-if [[ $(grep 'update' /home/pi/CubeSatSim/.updated) ]]; then
-  echo "update script updated, running again"
-  /home/pi/CubeSatSim/update
-fi
-
-if [ ! -d "/home/pi/PiSSTVpp" ]; then
-
-#  sudo apt-get update && sudo apt-get dist-upgrade -y
-  sudo apt-get update -y
-
-  sudo apt-get install -y python-picamera python3-picamera build-essential libgd-dev libmagic-dev
-
-
-  cd
-
-  git clone https://github.com/alanbjohnston/PiSSTVpp.git
-
-  cd PiSSTVpp
-
-  make pisstvpp
-
-  cd
-  
-  
-  sudo raspi-config nonint do_camera 0
-  
-fi
-
-if [ ! -d "/home/pi/rpitx" ]; then
-
-	cd
-	git clone https://github.com/alanbjohnston/rpitx.git
-	cd rpitx
-	./install.sh
-	cd
-else
-
-	if [[ $(grep 'SYNCWITHPWM'  /home/pi/rpitx/src/librpitx/src/fskburst.h) ]]; then
-	    echo "rpitx library already updated"
-	else
-	    echo "updating rpitx"
-	    cd  /home/pi/rpitx
-	    git pull
-	    ./update.sh
-	    cd
-	fi
-fi
-
-if [ ! -d "/home/pi/WiringPi" ]; then
-
-  cd
-
-  git clone https://github.com/alanbjohnston/WiringPi
-  cd WiringPi
-  ./build debian
-
-  sudo dpkg -i debian-template/wiringpi-2.61-1.deb
-
-  cd
-
-  cd CubeSatSim
-  make debug
-
-  FLAG=1
-
-  cd
-
-fi
-
-if [ ! -d "/home/pi/ssdv" ]; then
-
-	echo "Installing SSDV for FUNcube mode"
-	cd
-	git clone https://github.com/alanbjohnston/ssdv.git  # install ssdv for FUNcube images
-	cd ssdv
-	make
-	cd
-	FLAG=1
-fi
-
-if [ ! -d "/home/pi/fctelem" ]; then
-	echo "Installing fctelem binary v0.2 for FUNcube mode"
-	cd
-	mkdir /home/pi/fctelem
-	mkdir /home/pi/fctelem/public_html
-	cd fctelem
-	wget https://github.com/alanbjohnston/go/releases/download/v0.2/fctelem.zip
-	unzip -u fctelem.zip
-	FLAG=1
-elif [ ! -f "/home/pi/fctelem/v0.2" ]; then
-	echo "Updating fctelem binary to version v0.2 for FUNcube mode"
-	cd
-	cd /home/pi/fctelem
-	sudo mv fctelem fctelem.bk
-	sudo mv fcdecode.conf fcdecode.conf.bk
-	sudo mv fctelem.zip fctelem.zip.1
-	wget https://github.com/alanbjohnston/go/releases/download/v0.2/fctelem.zip
-	unzip -u fctelem.zip
-	FLAG=1
-fi
-
-if [ ! -f "/home/pi/MPU6050-C-CPP-Library-for-Raspberry-Pi/mpu6050" ]; then
-	echo "Installing MPU6050-C-CPP-Library-for-Raspberry-Pi"
-	sudo apt-get install -y libi2c-dev
-	cd
-	git clone https://github.com/alanbjohnston/MPU6050-C-CPP-Library-for-Raspberry-Pi.git
-	cd MPU6050-C-CPP-Library-for-Raspberry-Pi
-	sudo make install
-	make payload
-fi
-
-cd /home/pi/MPU6050-C-CPP-Library-for-Raspberry-Pi
-git checkout master
-git pull --no-rebase > .updated_p
-
-if [[ $(grep 'changed' /home/pi/MPU6050-C-CPP-Library-for-Raspberry-Pi/.updated_p) ]]; then
-
-	echo "updating MPU6050-C-CPP-Library-for-Raspberry-Pi"
-	sudo make install
-	make payload
-else
-	echo "nothing to do for MPU6050-C-CPP-Library-for-Raspberry-Pi."
-fi 
-
-if [ ! -f "/home/pi/raspberry-pi-bme280/bme280" ]; then
-	echo "Installing raspberry-pi-bme280"
-	sudo apt-get install -y libi2c-dev
-	cd
-	git clone https://github.com/alanbjohnston/raspberry-pi-bme280.git
-	cd raspberry-pi-bme280
-	git checkout payload
-	make 
-fi
-
-cd /home/pi/raspberry-pi-bme280
-git checkout payload
-git pull --no-rebase > .updated_p
-
-if [[ $(grep 'changed' /home/pi/raspberry-pi-bme280/.updated_p) ]]; then
-
-	echo "updating raspberry-pi-bme280"
-	make
-
-else
-	echo "nothing to do for raspberry-pi-bme280."
-fi 
-
-if [ ! -f "/home/pi/fcdctl/fcdctl" ]; then
-	echo "Installing fcdctl to set FUNcubeDongle Pro gain"
-	sudo rm /var/lib/dpkg/info/python3-pip.list
-	sudo apt install python3-pip --reinstall
-	sudo apt-get install -y python3-smbus libusb-1.0 
-	cd
-	git clone https://github.com/csete/fcdctl.git
-	cd fcdctl
-	make fcdpp
-fi
-
-cd /home/pi/pi-power-button
-
-  git pull --no-rebase > .updated_p
-
-  git checkout master
-
-#  grep 'changed' /home/pi/pi-power-button/.updated_p
-#  if [[ $(grep 'changed' /home/pi/pi-power-button/.updated_p) ]]; then
-  
-    echo "updating pi-power-button."
-    
-    script/install
-
-    FLAG=1
-
- # else
- #   echo "nothing to do for pi-power-button."
- # fi 
-
-cd /home/pi/ssdv
-
-  git checkout master
-
-  git pull --no-rebase > .updated_p
-
-  grep 'changed' /home/pi/ssdv/.updated_p
-  if [[ $(grep 'changed' /home/pi/ssdv/.updated_p) ]]; then
-  
-    echo "updating ssdv."
-
-#    git checkout master
-    
-    script/install
-
-    FLAG=1
-
-  else
-    echo "nothing to do for ssdv."
-  fi 
-
-
-  if [[ $(grep 'dtparam=audio=on' /boot/config.txt) ]]; then
-    echo "dtparam=audio=on already in /boot/config.txt"
-  else
-    echo "adding dtparam=audio=on to /boot/config.txt"
-    sudo sh -c 'echo "\ndtparam=audio=on" >> /boot/config.txt'
-    FLAG=1
-  fi
-
-  if [[ $(grep 'dtoverlay=audremap,enable_jack=on' /boot/config.txt) ]]; then
-    echo "dtoverlay=audremap,enable_jack=on already in /boot/config.txt"
-  else
-    echo "adding dtoverlay=audremap,enable_jack=on to /boot/config.txt"
-    sudo sh -c 'echo "\ndtoverlay=audremap,enable_jack=on" >> /boot/config.txt'
-    FLAG=1
-  fi
-
-  if [[ $(grep 'dtoverlay=pwm,pin=18,func=2' /boot/config.txt) ]]; then
-    echo "dtoverlay=pwm,pin=18,func=2 already in /boot/config.txt"
-  else
-    echo "adding dtoverlay=pwm,pin=18,func=2 to /boot/config.txt"
-    sudo sh -c 'echo "\ndtoverlay=pwm,pin=18,func=2" >> /boot/config.txt'
-    FLAG=1
-
-#    cd /home/pi/pi-power-button
-#   git pull --no-rebase
-#    git checkout reboot-mode-change
-#    script/install
-
-##    sudo apt-get update && sudo apt-get dist-upgrade -y
-#    sudo apt-get update -y
-#    sudo apt-get install -y libjpeg-dev zlib1g-dev libfreetype6-dev liblcms1-dev libopenjp2-7 libtiff5 python3-pil
-#    sudo pip3 install -y adafruit-blinka RPI.GPIO adafruit-extended-bus adafruit-circuitpython-ina219 pillow
-
-  fi
-
-  if [[ $(grep 'disable_splash=1' /boot/config.txt) ]]; then
-    echo "disable_splash=1 already in /boot/config.txt"
-  else
-    echo "adding  to /boot/config.txt"
-    sudo sh -c 'echo "\ndisable_splash=1" >> /boot/config.txt'
-    FLAG=1
-  fi
-
-  if [[ $(grep 'boot_delay=0' /boot/config.txt) ]]; then
-    echo "boot_delay=0 already in /boot/config.txt"
-  else
-    echo "adding  to /boot/config.txt"
-    sudo sh -c 'echo "\nboot_delay=0" >> /boot/config.txt'
-    FLAG=1
-  fi
-
-  if ! grep -q force_turbo=1 /boot/config.txt ; then 
-    sudo sh -c 'echo "force_turbo=1" >> /boot/config.txt' 
-    FLAG=1
-  fi
-
-#if [ ! -f "/home/pi/CubeSatSim/telem_string.txt" ]; then
-
-#  sudo apt-get update && sudo apt-get dist-upgrade -y
-
-#  sudo apt-get install -y libjpeg-dev zlib1g-dev libfreetype6-dev liblcms1-dev libopenjp2-7 libtiff5 -y
-
-#  sudo pip3 install pillow
-
-#fi
-
-changed=0
-value=`cat /home/pi/CubeSatSim/sim.cfg`
-# echo "$value"
-echo "$value" > /dev/null
-set -- $value
-
-if [ -z "$1" ] ; then n1="AMSAT" ; changed=1 ; else n1=$1 ; fi # callsign
-if [ -z "$2" ] ; then n2="0" ; changed=1 ; else n2=$2 ; fi # reset count
-if [ -z "$3" ] ; then n3="0" ; changed=1 ; else n3=$3 ; fi # lat
-if [ -z "$4" ] ; then n4="0" ; changed=1 ; else n4=$4 ; fi # lon
-if [ -z "$5" ] ; then n5="no" ; changed=1 ; else n5=$5 ; fi # sim mode
-if [ -z "$6" ] ; then n6="3" ; changed=1 ; else n6=$6 ; fi # squelch
-if [ -z "$7" ] ; then n7="434.9000" ; changed=1 ; else n7=$7 ; fi # transmit frequency
-if [ -z "$8" ] ; then n8="435.0000" ; changed=1 ; else n8=$8 ; fi # receive frequency
-if [ -z "$9" ] ; then n9="no" ; changed=1 ; else n9=$9 ; fi # hab mode
-if [ -z "${10}" ] ; then m1="0" ; changed=1 ; else m1=${10} ; fi # rx pl code 
-if [ -z "${11}" ] ; then m2="0" ; changed=1 ; else m2=${11} ; fi # tx pl code
-
-if [ $changed -eq 1 ]; then
-	echo -e "Current sim.cfg configuration file:"	
-	echo
-	echo $1 $2 $3 $4 $5 $6 $7 $8 $9 ${10} ${11}
-	echo -e "\nCubeSatSim configuration sim.cfg file updated to: \n"
-	echo
-	echo $n1 $n2 $n3 $n4 $n5 $n6 $n7 $n8 $n9 $m1 $m2
-	echo $n1 $n2 $n3 $n4 $n5 $n6 $n7 $n8 $n9 $m1 $m2 > /home/pi/CubeSatSim/sim.cfg
-	echo
-fi
-
-if [ "$noreboot" = "0" ] ; then  
-
-	if [ $FLAG -eq 1 ]; then
-	  echo "systemctl daemon-reload and reboot"
-	  sudo systemctl daemon-reload 
-	  sudo reboot -h now
-#  sudo  cubesatsim
-	else
-	  grep 'changed' /home/pi/CubeSatSim/.updated
-	  if [[ $(grep 'changed' /home/pi/CubeSatSim/.updated) ]]; then
-	    echo "reboot due to code changes " | wall
-	    sudo reboot -h now
-#    sudo  cubesatsim
-	  else
-	    echo "nothing to do."
-	  fi  
-	fi
-else
-	if [ $FLAG -eq 1 ]; then
-		echo "reboot needed for changes to take effect" | wall
-	fi
-fi
-
-echo "CubeSatSim update complete."
diff --git a/update b/update
new file mode 120000
index 00000000..f7ffc47a
--- /dev/null
+++ b/update
@@ -0,0 +1 @@
+install
\ No newline at end of file