diff --git a/bootstrap.sh b/bootstrap.sh
index 6f14d46..d92baa1 100755
--- a/bootstrap.sh
+++ b/bootstrap.sh
@@ -30,7 +30,7 @@
 # license and credits.
 
 # Set branch
-BRANCH=master
+BRANCH=devel
 
 ############
 ### Global Declarations
diff --git a/install.sh b/install.sh
index 0633b4f..5e243a5 100755
--- a/install.sh
+++ b/install.sh
@@ -39,7 +39,7 @@
 declare THISSCRIPT TOOLPATH VERSION GITBRNCH GITURL GITPROJ PACKAGE GITPROJWWW
 declare GITPROJSCRIPT GITURLWWW GITURLSCRIPT INSTANCES WEBPATH CHAMBER VERBOSE
 declare REPLY SOURCE SCRIPTSOURCE SCRIPTPATH CHAMBERNAME WEBSOURCE HOMEPATH
-declare TILTCOLOR TILTCOLORS
+declare TILTCOLOR TILTCOLORS DUMMYDEVICE
 # Color/character codes
 declare BOLD SMSO RMSO FGBLK FGRED FGGRN FGYLW FGBLU FGMAG FGCYN FGWHT FGRST
 declare BGBLK BGRED BGGRN BGYLW BGBLU BGMAG BGCYN BGWHT BGRST DOT HHR LHR RESET
@@ -383,7 +383,7 @@ getscriptpath() {
     # See if we already have chambers installed
     if [ -n "${INSTANCES[*]}" ]; then
         # We've already got BrewPi installed in multi-chamber
-        echo -e "\nThe following chambers are already configured on this Pi:\n"
+        echo -e "\nThe following chambers are already configured on this system:\n"
         # shellcheck disable=2128
         for instance in $INSTANCES
         do
@@ -456,39 +456,40 @@ getscriptpath() {
 ### Install a udev rule to connect this instance to an Arduino
 ############
 
-doport(){
+doport() {
     if [ -n "$CHAMBER" ]; then
         declare -i count=-1
-        #declare -a port
         declare -a serial
         declare -a manuf
         rules="/etc/udev/rules.d/99-arduino.rules"
-        devices=$(ls /dev/ttyACM* /dev/ttyUSB* 2> /dev/null)
-        # Get a list of USB TTY devices
-        for device in "${devices[@]}"; do
+
+        # Get a list of all USB devices (/dev/tty(ACM*|ttyUSB*))
+        mapfile -t < <(find "/dev/" \( -name "ttyACM*" -o -name "ttyUSB*" \))
+
+        # Create a list of manufacturer/serial number for attached devices
+        for device in "${MAPFILE[@]}"; do
             declare ok=false
             # Walk device tree | awk out the stanza with the last device in chain
             board=$(udevadm info --a -n "$device" | awk -v RS='' '/ATTRS{maxchild}=="0"/')
             thisSerial=$(echo "$board" | grep "serial" | cut -d'"' -f 2)
-            grep -q "$thisSerial" "$rules" 2> /dev/null || ok=true # Serial not in file
-            [ -z "$board" ] && ok=false # Board exists
+            thisManuf=$(echo "$board" | grep "manufacturer" | cut -d'"' -f 2)
+            # Check to make sure the serial number is not currently assigned
+            grep -q "$thisSerial" "$rules" 2> /dev/null || ok=true
+            [ -z "$device" ] && ok=false # Board exists
             if "$ok"; then
                 ((count++))
-                # Get the device Product ID, Vendor ID and Serial Number
-                #idProduct=$(echo "$board" | grep "idProduct" | cut -d'"' -f 2)
-                #idVendor=$(echo "$board" | grep "idVendor" | cut -d'"' -f 2)
-                #port[count]="$device"
-                serial[count]=$(echo "$board" | grep "serial" | cut -d'"' -f 2)
-                manuf[count]=$(echo "$board" | grep "manufacturer" | cut -d'"' -f 2)
+                serial[count]="$thisSerial"
+                manuf[count]="$thisManuf"
             fi
         done
+
         # Display a menu of devices to associate with this chamber
         if [ "$count" -gt 0 ]; then
             # There's more than one (it's 0-based)
             echo -e "\nThe following seem to be the Arduinos available on this system:\n"
             for (( c=0; c<=count; c++ ))
             do
-                echo -e "[$c] Manuf: ${manuf[c]}, Serial: ${serial[c]}"
+                echo -e "\t[$c] ${manuf[c]}, SerNo: ${serial[c]}"
             done
             echo
             while :; do
@@ -499,46 +500,54 @@ doport(){
                     break
                 fi
             done
+
             # Device already exists - well-meaning user may have set it up
             if [ -L "/dev/$CHAMBER" ]; then
-                echo -e "\nPort /dev/$CHAMBER already exists as a link; using it but check your setup."
+                # Link in /dev* already exists
+                echo -e "\nWarning: A link to port /dev/$CHAMBER already exists. Using it in config,\nbut check your setup.\n"
+                read -n 1 -s -r -p "Press any key to continue. " < /dev/tty
+                echo
             else
                 echo -e "\nCreating rule for board ${serial[board]} as /dev/$CHAMBER."
-                # Concatenate the rule
-                rule='SUBSYSTEM=="tty", ATTRS{serial}=="sernum", SYMLINK+="chambr"'
-                #rule+=', GROUP="brewpi"'
+                # Concatenate the rule with __placeholders__
+                rule='SUBSYSTEM=="tty", ATTRS{serial}=="__serial__", SYMLINK+="__chamber__"'
                 # Replace placeholders with real values
-                rule="${rule/sernum/${serial[board]}}"
-                rule="${rule/chambr/$CHAMBER}"
+                rule="${rule/__serial__/${serial[board]}}"
+                rule="${rule/__chamber__/$CHAMBER}"
                 echo "$rule" >> "$rules"
             fi
-            udevadm control --reload-rules
-            udevadm trigger
-            elif [ "$count" -eq 0 ]; then
-            # Only one (it's 0-based), use it
+
+        # Only one (it's 0-based), use it
+        elif [ "$count" -eq 0 ]; then
             if [ -L "/dev/$CHAMBER" ]; then
-                echo -e "\nPort /dev/$CHAMBER already exists as a link; using it but check your setup."
+                # Link in /dev* already exists
+                echo -e "\nWarning: A link to port /dev/$CHAMBER already exists. Using it in config,\nbut check your setup.\n"
+                read -n 1 -s -r -p "Press any key to continue. " < /dev/tty
+                echo
             else
                 echo -e "\nCreating rule for board ${serial[0]} as /dev/$CHAMBER."
-                # Concatenate the rule
-                rule='SUBSYSTEM=="tty", ATTRS{serial}=="sernum", SYMLINK+="chambr"'
-                #rule+=', GROUP="brewpi"'
+                # Concatenate the rule with __placeholders__
+                rule='SUBSYSTEM=="tty", ATTRS{serial}=="__serial__", SYMLINK+="__chamber__"'
                 # Replace placeholders with real values
-                rule="${rule/sernum/${serial[0]}}"
-                rule="${rule/chambr/$CHAMBER}"
+                rule="${rule/__serial__/${serial[0]}}"
+                rule="${rule/__chamber__/$CHAMBER}"
                 echo "$rule" >> "$rules"
             fi
+
+            # Reload new rules
             udevadm control --reload-rules
             udevadm trigger
+
+        # We have selected multi-chamber but there's no devices
         else
-            # We have selected multi-chamber but there's no devices
-            echo -e "\nYou've configured the system for multi-chamber support however no Arduinos were"
-            echo -e "found to configure. The following configuration will be created, however you"
+            DUMMYDEVICE=true
+            echo -e "\nYou've configured the system for multi-chamber support, however no Arduinos"
+            echo -e "were found to configure. The following configuration will be created, however"
             echo -e "must manually create a rule for your device to match the configuration file."
-            echo -e "\n\tConfiguration File: $SCRIPTPATH/settings/config.cnf"
+            echo -e "\n\tConfiguration File: $SCRIPTPATH/settings/config.cfg"
             echo -e "\tDevice:             /dev/$CHAMBER\n"
             read -n 1 -s -r -p "Press any key to continue. " < /dev/tty
-            echo -e ""
+            echo
         fi
     else
         echo -e "\nScripts will use default 'port = auto' setting."
@@ -794,18 +803,25 @@ fixsafari() {
 ############
 
 flash() {
-    local yn branch
+    local yn branch pythonpath
     branch="${GITBRNCH,,}"
     if [ ! "$branch" == "master" ]; then
         branch="--beta"
     else
         branch=""
     fi
+
+    if [ -n "$CHAMBER" ]; then
+        pythonpath=$(which python)
+    else
+        pythonpath="/home/brewpi/venv/bin/python"
+    fi
+
     echo -e "\nIf you have previously flashed your controller, you do not need to do so again."
     read -rp "Do you want to flash your controller now? [y/N]: " yn  < /dev/tty
     yn=${yn//[^[:alpha:].-]/}
     case "$yn" in
-        [Yy]* ) eval "python3 -u $SCRIPTPATH/utils/updateFirmware.py $branch" ;;
+        [Yy]* ) eval "$pythonpath -u $SCRIPTPATH/utils/updateFirmware.py $branch" ;;
         * ) ;;
     esac
 }
@@ -889,7 +905,7 @@ main() {
         fi
     fi
     doperms # Set script and www permissions
-    flash # Flash controller
+    [ ! "$DUMMYDEVICE" = true ] && flash # Flash controller if present
     # Allow BrewPi to start via daemon
     rm -f "$WEBPATH/do_not_run_brewpi"
     if [ -n "$CHAMBER" ]; then
diff --git a/uninstall.sh b/uninstall.sh
index 3676c32..30cbc0f 100755
--- a/uninstall.sh
+++ b/uninstall.sh
@@ -34,11 +34,9 @@
 ############
 
 # General constants
-declare CMDLINE PACKAGE GITBRNCH THISSCRIPT VERSION APTPACKAGES
+declare CMDLINE PACKAGE THISSCRIPT APTPACKAGES
 declare PIPPACKAGES REPLY REALUSER LINK
 # Version/Branch Constants
-GITBRNCH="master"
-VERSION="0.5.4.2"
 THISSCRIPT="uninstall.sh"
 LINK="uninstall.brewpiremix.com"
 
@@ -49,12 +47,7 @@ LINK="uninstall.brewpiremix.com"
 init() {
     # Set up some project variables we won't have
     PACKAGE="BrewPi-Tools-RMX"
-    if [ ! "GITBRNCH" == "master" ]; then
-    # Use devel branch link
-        CMDLINE="curl -L dev$LINK | sudo bash"
-    else
-        CMDLINE="curl -L $LINK | sudo bash"
-    fi
+    CMDLINE="curl -L $LINK | sudo bash"
     # Packages to be uninstalled via apt
     APTPACKAGES="git-core pastebinit build-essential git arduino-core libapache2-mod-php apache2 python-configobj python-dev python-pip php-xml php-mbstring php-cgi php-cli php-common php libatlas-base-dev python3-numpy python3-scipy"
     # Packages to be uninstalled via pip
@@ -130,7 +123,7 @@ log() {
 usage() {
 cat << EOF
 
-$PACKAGE $THISSCRIPT version $VERSION
+$PACKAGE $THISSCRIPT
 
 Usage: sudo ./$THISSCRIPT"
 EOF
@@ -140,7 +133,7 @@ EOF
 version() {
 cat << EOF
 
-$THISSCRIPT ($PACKAGE) $VERSION
+$THISSCRIPT ($PACKAGE)
 
 Copyright (C) 2018, 2019 Lee C. Bussy (@LBussy)
 
@@ -274,15 +267,20 @@ syslogd() {
 ############
 
 quitproc() {
-    declare home instance instances
+    declare home instance instances pythonpath
     home="/home/brewpi"
     echo -e "\nQuitting any running BrewPi processes." > /dev/tty
     instances=$(find "$home" -name "brewpi.py" 2> /dev/null)
     IFS=$'\n' instances=("$(sort <<<"${instances[*]}")") && unset IFS # Sort list
     # Send quit messages to all BrewPi instances
+    if [ -f "/home/brewpi/venv/bin/python" ]; then
+        pythonpath="/home/brewpi/venv/bin/python"
+    else
+        pythonpath=$(which python)
+    fi
     for instance in $instances
     do
-        /usr/bin/python3 -u "$instance" --quit
+        eval "$pythonpath  -u $instance --quit"
     done
     sleep 2
     # Get instances again
@@ -291,7 +289,7 @@ quitproc() {
     IFS=$'\n' instances=("$(sort <<<"${instances[*]}")") && unset IFS # Sort list    # Send kill messages to all BrewPi instances
     for instance in $instances
     do
-        /usr/bin/python3 -u "$instance" --kill
+        eval "$pythonpath  -u $instance --kill"
     done
     sleep 2
 }
@@ -341,14 +339,14 @@ killproc() {
 delrepo() {
     local webroot
     # Wipe out tools
-    if [ -d "/home/$REALUSER/brewpi-tools-rmx" ]; then
-        echo -e "\nClearing /home/$REALUSER/brewpi-tools-rmx." > /dev/tty
-        rm -fr "/home/$REALUSER/brewpi-tools-rmx"
+    if [ -d "$HOMEPATH/brewpi-tools-rmx" ]; then
+        echo -e "\nClearing $HOMEPATH/brewpi-tools-rmx." > /dev/tty
+        rm -fr "$HOMEPATH/brewpi-tools-rmx"
     fi
     # Wipe out legacy tools
-    if [ -d "/home/$REALUSER/brewpi-tools" ]; then
-        echo -e "\nClearing /home/$REALUSER/brewpi-tools." > /dev/tty
-        rm -fr "/home/$REALUSER/brewpi-tools"
+    if [ -d "$HOMEPATH/brewpi-tools" ]; then
+        echo -e "\nClearing $HOMEPATH/brewpi-tools." > /dev/tty
+        rm -fr "$HOMEPATH/brewpi-tools"
     fi
     # Wipe out BrewPi scripts
     if [ -d /home/brewpi ]; then
@@ -567,7 +565,7 @@ resetpwd() {
 
 delchamber() {
     local chamber newchamber link home instances newlink webDir unitFile
-    local daemonName rules scriptDir webPath
+    local daemonName rules scriptDir webPath pythonpath
     chamber="$1"
     home="/home/brewpi"
     rules="/etc/udev/rules.d/99-arduino.rules"
@@ -615,9 +613,10 @@ delchamber() {
     fi
     # Delete BrewPi scripts for chamber
     if [ -d "$scriptDir" ]; then
+        pythonpath="/home/brewpi/venv/bin/python"
         # Stop running instance
-        "$scriptDir/brewpi.py --quit" > /dev/null 2>&1
-        "$scriptDir/brewpi.py --kill" > /dev/null 2>&1
+        "$pythonpath $scriptDir/brewpi.py --quit" > /dev/null 2>&1
+        "$pythonpath $scriptDir/brewpi.py --kill" > /dev/null 2>&1
         # Remove BrewPi script instance
         echo -e "\nRemoving $scriptDir."
         rm -fr "$scriptDir" > /dev/null 2>&1