diff --git a/attacks/Handshake Snooper/attack.sh b/attacks/Handshake Snooper/attack.sh
index 51fe3fe..6653e9e 100755
--- a/attacks/Handshake Snooper/attack.sh	
+++ b/attacks/Handshake Snooper/attack.sh	
@@ -6,7 +6,6 @@
 
 HandshakeSnooperState="Not Ready"
 
-
 # ============================================================ #
 # ========= < Handshake Snooper Helper Subroutines > ========= #
 # ============================================================ #
@@ -14,7 +13,6 @@ handshake_snooper_header() {
   fluxion_header; fluxion_target_show; echo
 }
 
-
 # ============================================================ #
 # ============= < Handshake Snooper Subroutines > ============ #
 # ============================================================ #
@@ -372,7 +370,7 @@ if [ ! "$HandshakeSnooperCLIArguments" ]; then
     getopt --options="v:i:j:a" \
       --longoptions="verifier:,interval:,jammer:,asynchronous" \
       --name="Handshake Snooper V$FLUXIONVersion.$FLUXIONRevision" -- "$@"
-    ); then
+    );n then
     echo -e "${CRed}Aborted$CClr, parameter error detected..."
     sleep 5
     fluxion_handle_exit
diff --git a/fluxion.sh b/fluxion.sh
index 3dc4099..65ef628 100755
--- a/fluxion.sh
+++ b/fluxion.sh
@@ -4,7 +4,7 @@
 # ================== < FLUXION Parameters > ================== #
 # ============================================================ #
 # Path to directory containing the FLUXION executable script.
-readonly FLUXIONPath=$(dirname $(readlink -f "$0"))
+readonly FLUXIONPath=$(dirname "$(readlink -f "$0")")
 
 # Path to directory containing the FLUXION library (scripts).
 readonly FLUXIONLibPath="$FLUXIONPath/lib"
@@ -22,7 +22,7 @@ readonly FLUXIONNoiseFloor=-90
 readonly FLUXIONNoiseCeiling=-60
 
 readonly FLUXIONVersion=4
-readonly FLUXIONRevision=12
+readonly FLUXIONRevision=13
 
 # Declare window ration bigger = smaller windows
 FLUXIONWindowRatio=4
@@ -34,32 +34,32 @@ FLUXIONSkipDependencies=0
 # ================= < Script Sanity Checks > ================= #
 # ============================================================ #
 if [ $EUID -ne 0 ]; then # Super User Check
-  echo -e "\033[31mAborted, please execute the script as root.\033[0m"; exit 1
+  echo -e "\\033[31mAborted, please execute the script as root.\\033[0m"; exit 1
 fi
 
 # ===================== < XTerm Checks > ===================== #
 # TODO: Run the checks below only if we're not using tmux.
 if [ ! "${DISPLAY:-}" ]; then # Assure display is available.
-  echo -e "\033[31mAborted, X (graphical) session unavailable.\033[0m"; exit 2
+  echo -e "\\033[31mAborted, X (graphical) session unavailable.\\033[0m"; exit 2
 fi
 
 if ! hash xdpyinfo 2>/dev/null; then # Assure display probe.
-  echo -e "\033[31mAborted, xdpyinfo is unavailable.\033[0m"; exit 3
+  echo -e "\\033[31mAborted, xdpyinfo is unavailable.\\033[0m"; exit 3
 fi
 
 if ! xdpyinfo &>/dev/null; then # Assure display info available.
-  echo -e "\033[31mAborted, xterm test session failed.\033[0m"; exit 3
+  echo -e "\\033[31mAborted, xterm test session failed.\\033[0m"; exit 3
 fi
 
 # ================ < Parameter Parser Check > ================ #
 getopt --test > /dev/null # Assure enhanced getopt (returns 4).
 if [ $? -ne 4 ]; then
-  echo "\033[31mAborted, enhanced getopt isn't available.\033[0m"; exit 4
+  echo "\\033[31mAborted, enhanced getopt isn't available.\\033[0m"; exit 4
 fi
 
 # =============== < Working Directory Check > ================ #
 if ! mkdir -p "$FLUXIONWorkspacePath" &> /dev/null; then
-  echo "\033[31mAborted, can't generate a workspace directory.\033[0m"; exit 5
+  echo "\\033[31mAborted, can't generate a workspace directory.\\033[0m"; exit 5
 fi
 
 # Once sanity check is passed, we can start to load everything.
@@ -104,7 +104,7 @@ fi
 eval set -- "$FLUXIONCLIArguments" # Set environment parameters.
 
 #[ "$1" != "--" ] && readonly FLUXIONAuto=1 # Auto-mode if using CLI.
-while [ "$1" != "" -a "$1" != "--" ]; do
+while [ "$1" != "" ] && [ "$1" != "--" ]; do
   case "$1" in
     -v|--version) echo "FLUXION V$FLUXIONVersion.$FLUXIONRevision"; exit;;
     -h|--help) fluxion_help; exit;;
@@ -165,7 +165,7 @@ fi
 
 # FLUXIONDebug [Normal Mode "" / Developer Mode 1]
 if [ $FLUXIONDebug ]; then
-  touch /tmp/fluxion_debug_log
+  :> /tmp/fluxion_debug_log
   readonly FLUXIONOutputDevice="/tmp/fluxion_debug_log"
   readonly FLUXIONHoldXterm="-hold"
 else
@@ -233,7 +233,7 @@ fluxion_startup() {
     "¯¯¯     ¯¯¯¯¯¯  ¯¯¯¯¯¯¯  ¯¯¯    ¯¯¯ ¯¯¯¯  ¯¯¯¯¯¯¯  ¯¯¯¯¯¯¯¯"
   banner+=("$FormatCenterLiterals")
 
-  clear
+  printf "\\e[2J";
 
   if [ "$FLUXIONAuto" ]; then echo -e "$CBlu"; else echo -e "$CRed"; fi
 
@@ -284,12 +284,12 @@ fluxion_startup() {
         echo
         echo -e "${CRed}Dependency installation failed!$CClr"
         echo    "Press enter to retry, ctrl+c to exit..."
-        read bullshit
+        read -r bullshit
       fi
     done
   fi
 
-  echo -e "\n\n" # This echo is for spacing
+  echo -e "\\n\\n" # This echo is for spacing
 }
 
 fluxion_shutdown() {
@@ -315,7 +315,8 @@ fluxion_shutdown() {
   local targetID # Program identifier/title
   for targetID in "${targets[@]}"; do
     # Get PIDs of all programs matching targetPID
-    local targetPID=$(
+    local targetPID
+    targetPID=$(
       echo "${processes[@]}" | awk '$4~/'"$targetID"'/{print $1}'
     )
     if [ ! "$targetPID" ]; then continue; fi
@@ -366,8 +367,8 @@ fluxion_shutdown() {
     echo -e "$CWht[$CRed-$CWht] $FLUXIONRestartingNetworkManagerNotice$CClr"
 
     # TODO: Add support for other network managers (wpa_supplicant?).
-    if [ $(which systemctl) ]; then
-      if [ $(which service) ];then
+    if [ ! -x "$(command -v systemctl)" ]; then
+      if [ -x "$(command -v service)" ];then
         service network-manager restart &> $FLUXIONOutputDevice &
         service networkmanager restart &> $FLUXIONOutputDevice &
         service networking restart &> $FLUXIONOutputDevice &
@@ -382,7 +383,7 @@ fluxion_shutdown() {
 
   sleep 3
 
-  clear
+  printf "\\e[2J";
 
   exit 0
 }
@@ -394,7 +395,7 @@ fluxion_shutdown() {
 # Delete log only in Normal Mode !
 fluxion_conditional_clear() {
   # Clear iff we're not in debug mode
-  if [ ! $FLUXIONDebug ]; then clear; fi
+  if [ ! $FLUXIONDebug ]; then printf "\\e[2J"; fi
 }
 
 fluxion_conditional_bail() {
@@ -405,7 +406,7 @@ fluxion_conditional_bail() {
     return 1
   fi
   echo "Press any key to continue execution..."
-  read bullshit
+  read -r bullshit
 }
 
 # ERROR Report only in Developer Mode
@@ -484,9 +485,9 @@ trap fluxion_handle_target_change SIGALRM
 fluxion_set_resolution() { # Windows + Resolution
 
   # Get dimensions
-  SCREEN_SIZE=$(xdpyinfo | grep dimension | awk '{print $4}' | tr -d "(")
-  SCREEN_SIZE_X=$(printf '%.*f\n' 0 $(echo $SCREEN_SIZE | sed -e s'/x/ /'g | awk '{print $1}'))
-  SCREEN_SIZE_Y=$(printf '%.*f\n' 0 $(echo $SCREEN_SIZE | sed -e s'/x/ /'g | awk '{print $2}'))
+  shopt -s checkwinsize; (:;:)
+  SCREEN_SIZE_X="$LINES"
+  SCREEN_SIZE_Y="$COLUMNS"
 
   # Calculate proportional windows
   if hash bc ;then
@@ -540,7 +541,7 @@ declare -rA FLUXIONUndoable=( \
 # Yes, I know, the identifiers are fucking ugly. If only we had
 # some type of mangling with bash identifiers, that'd be great.
 fluxion_do() {
-  if [ ${#@} -lt 2 ]; then return -1; fi
+  if [ ${#@} -lt 2 ]; then return 1; fi
 
   local -r __fluxion_do__namespace=$1
   local -r __fluxion_do__identifier=$2
@@ -553,7 +554,7 @@ fluxion_do() {
 }
 
 fluxion_undo() {
-  if [ ${#@} -ne 1 ]; then return -1; fi
+  if [ ${#@} -ne 1 ]; then return 1; fi
 
   local -r __fluxion_undo__namespace=$1
 
@@ -567,7 +568,7 @@ fluxion_undo() {
   local __fluxion_undo__i
   for (( __fluxion_undo__i=${#__fluxion_undo__history[@]}; \
     __fluxion_undo__i > 0; __fluxion_undo__i-- )); do
-    local __fluxion_undo__instruction=${__fluxion_undo__history[__fluxion_undo__i-1]}
+    local __fluxion_undo__instruction=${__fluxion_undo__history[__fluxion_undo__i1]}
     local __fluxion_undo__command=${__fluxion_undo__instruction%%_*}
     local __fluxion_undo__identifier=${__fluxion_undo__instruction#*_}
 
@@ -582,21 +583,21 @@ fluxion_undo() {
     fi
   done
 
-  return -2 # The undo-chain failed.
+  return 2 # The undo-chain failed.
 }
 
 fluxion_done() {
-  if [ ${#@} -ne 1 ]; then return -1; fi
+  if [ ${#@} -ne 1 ]; then return 1; fi
 
   local -r __fluxion_done__namespace=$1
 
-  eval "FluxionDone=\${FXDLog_$__fluxion_done__namespace[-1]}"
+  eval "FluxionDone=\${FXDLog_${__fluxion_done__namespace[1]}}"
 
   if [ ! "$FluxionDone" ]; then return 1; fi
 }
 
 fluxion_done_reset() {
-  if [ ${#@} -ne 1 ]; then return -1; fi
+  if [ ${#@} -ne 1 ]; then return 1; fi
 
   local -r __fluxion_done_reset__namespace=$1
 
@@ -604,7 +605,7 @@ fluxion_done_reset() {
 }
 
 fluxion_do_sequence() {
-  if [ ${#@} -ne 2 ]; then return -1; fi
+  if [ ${#@} -ne 2 ]; then return 1; fi
 
   # TODO: Implement an alternative, better method of doing
   # what this subroutine does, maybe using for-loop iteFLUXIONWindowRation.
@@ -692,7 +693,7 @@ fluxion_set_language() {
   if [ ! "$FluxionLanguage" ]; then
     # Get all languages available.
     local languageCodes
-    readarray -t languageCodes < <(ls -1 language | sed -E 's/\.sh//')
+    readarray -t languageCodes < <(ls 1 language | sed -E 's/\.sh//')
 
     local languages
     readarray -t languages < <(
@@ -767,7 +768,7 @@ fluxion_deallocate_interface() { # Release interfaces
       fi
 
       # Attempt to restore the original interface identifier.
-      if ! interface_reidentify $oldIdentifier $newIdentifier; then
+      if ! interface_reidentify "$oldIdentifier" "$newIdentifier"; then
         return 5
       fi
     fi
@@ -952,7 +953,7 @@ fluxion_next_assignable_interface() {
 # Parameters: <interfaces:lambda> [<query>]
 # Note: The interfaces lambda must print an interface per line.
 # ------------------------------------------------------------ #
-# Return -1: Go back
+# Return 1: Go back
 # Return  1: Missing interfaces lambda identifier (not passed).
 fluxion_get_interface() {
   if ! type -t "$1" &> /dev/null; then return 1; fi
@@ -1045,7 +1046,7 @@ fluxion_get_interface() {
           FluxionInterfaceSelectedInfo=""
           return 0;;
         "$FLUXIONGeneralRepeatOption") continue;;
-        "$FLUXIONGeneralBackOption") return -1;;
+        "$FLUXIONGeneralBackOption") return 1;;
         *)
           FluxionInterfaceSelected="${IOQueryFormatFields[1]}"
           FluxionInterfaceSelectedState="${IOQueryFormatFields[2]}"
@@ -1174,7 +1175,7 @@ fluxion_get_target() {
       fluxion_target_get_candidates $interface $channels;;
 
     "$FLUXIONGeneralBackOption")
-      return -1;;
+      return 1;;
   esac
 
   # Abort if errors occured while searching for candidates.
@@ -1191,7 +1192,7 @@ fluxion_get_target() {
 
   # Gather information from all the candidates detected.
   # TODO: Clean up this for loop using a cleaner algorithm.
-  # Maybe try using array appending & [-1] for last elements.
+  # Maybe try using array appending & [1] for last elements.
   for candidateAPInfo in "${FluxionTargetCandidates[@]}"; do
     # Strip candidate info from any extraneous spaces after commas.
     candidateAPInfo=$(echo "$candidateAPInfo" | sed -r "s/,\s*/,/g")
@@ -1218,8 +1219,8 @@ fluxion_get_target() {
     candidatesESSID[i]=$(eval "echo \$'$sanitizedESSID'")
 
     local power=${candidatesPower[i]}
-    if [ $power -eq -1 ]; then
-      # airodump-ng's man page says -1 means unsupported value.
+    if [ $power -eq 1 ]; then
+      # airodump-ng's man page says 1 means unsupported value.
       candidatesQuality[i]="??"
     elif [ $power -le $FLUXIONNoiseFloor ]; then
       candidatesQuality[i]=0
@@ -1550,7 +1551,7 @@ fluxion_hash_verify() {
         local -r verifier="cowpatty" ;;
 
       "$FLUXIONGeneralBackOption")
-        return -1 ;;
+        return 1 ;;
     esac
   fi
 
@@ -1624,7 +1625,7 @@ fluxion_hash_set_path() {
           return $? ;;
 
         "$FLUXIONGeneralBackOption")
-          return -1 ;;
+          return 1 ;;
       esac
     fi
   fi
@@ -1641,7 +1642,7 @@ fluxion_hash_set_path() {
 
     # Back-track when the user leaves the hash path blank.
     # Notice: Path is cleared if we return, no need to unset.
-    if [ ! "$FluxionHashPath" ]; then return -1; fi
+    if [ ! "$FluxionHashPath" ]; then return 1; fi
 
     # Make sure the path points to a valid generic file.
     if [ ! -f "$FluxionHashPath" -o ! -s "$FluxionHashPath" ]; then
@@ -1660,7 +1661,7 @@ fluxion_hash_get_path() {
   while true; do
     fluxion_hash_unset_path
     if ! fluxion_hash_set_path "$@"; then
-      return -1 # WARNING: The recent error code is NOT contained in $? here!
+      return 1 # WARNING: The recent error code is NOT contained in $? here!
     fi
 
     if fluxion_hash_verify "$FluxionHashPath" "$2" "$3"; then
@@ -1692,7 +1693,7 @@ fluxion_set_attack() {
   fluxion_target_show
 
   local attacks
-  readarray -t attacks < <(ls -1 "$FLUXIONPath/attacks")
+  readarray -t attacks < <(ls 1 "$FLUXIONPath/attacks")
 
   local descriptions
   readarray -t descriptions < <(
@@ -1726,7 +1727,7 @@ fluxion_set_attack() {
   echo
 
   if [ "${IOQueryFormatFields[1]}" = "$FLUXIONGeneralBackOption" ]; then
-    return -1
+    return 1
   fi
 
   if [ "${IOQueryFormatFields[1]}" = "$FLUXIONAttackRestartOption" ]; then
@@ -1843,7 +1844,6 @@ fluxion_run_attack() {
   fluxion_unset_attack
 }
 
-
 # ============================================================ #
 # ================= < Argument Executables > ================= #
 # ============================================================ #
@@ -1855,7 +1855,6 @@ while [ "$1" != "" -a "$1" != "--" ]; do
   shift # Shift new parameters
 done
 
-
 # ============================================================ #
 # ===================== < FLUXION Loop > ===================== #
 # ============================================================ #
diff --git a/misc/check_device.sh b/misc/check_device.sh
new file mode 100755
index 0000000..f791867
--- /dev/null
+++ b/misc/check_device.sh
@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+
+fluxion_check_ap() {
+  readonly SUPPORT_AP=$(sed -n -e "$(echo $(($1+4)))p" devices.xml | cut -d ">" -f2 | cut -d "<" -f1)
+  if [ "$SUPPORT_AP" == "n" ];then
+    echo "false"
+  fi
+}
+
+fluxion_check_mo() {
+  readonly SUPPORT_MO=$(sed -n -e "$(echo $(($1+6)))p" devices.xml | cut -d ">" -f2 | cut -d "<" -f1)
+  if [ "$SUPPORT_MO" == "n" ];then
+    echo "false"
+  fi
+}
+
+# first identifier
+fluxion_check_chipset() {
+  declare -r LINE=$(grep "$1" devices.xml -n | head -n 1 | cut -d ":" -f1)
+
+  if [ "$(fluxion_check_ap "$LINE")" == "false" ] || [ "$(fluxion_check_mo "$LINE")" == "false" ];then
+    echo "false"
+  else
+    echo "true"
+  fi
+}
+
+fluxion_check_chipset "$1"