diff --git a/recipes-bsp/v2x-ieee802.11p/files/v2x-fw-load b/recipes-bsp/v2x-ieee802.11p/files/v2x-fw-load
index 03d84bb..bbfa4e7 100755
--- a/recipes-bsp/v2x-ieee802.11p/files/v2x-fw-load
+++ b/recipes-bsp/v2x-ieee802.11p/files/v2x-fw-load
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 SCRIPT_NAME=$(basename "${0}")
 
@@ -11,18 +11,20 @@ IS_PLACEHOLDER_FW=false
 #**********************************************************************************************
 # local helper functions
 #**********************************************************************************************
-function printUsage()
+printUsage()
 {
-    echo -e "\\nUsage: ${SCRIPT_NAME} [OPT] CMD \\n\\n"
-    echo -e "   CMD:"
-    echo -e "     -h|--help                  Show this help"
-    echo -e ""
-    echo -e "   OPT:"
-    echo -e "     -c|--config-file=FILE      The config file pathname (default=${V2X_CONF})"
-    echo -e ""
+    echo ""
+    echo "Usage: ${SCRIPT_NAME} [OPT] CMD"
+    echo ""
+    echo "   CMD:"
+    echo "     -h|--help                  Show this help"
+    echo ""
+    echo "   OPT:"
+    echo "     -c|--config-file=FILE      The config file pathname (default=${V2X_CONF})"
+    echo ""
 }
 
-function checkInputParameters()
+checkInputParameters()
 {
     if [ ! -f $V2X_RST ]; then
         echo "ERROR $SCRIPT_NAME: v2x module reset lines not available"
@@ -34,18 +36,17 @@ function checkInputParameters()
     fi
 }
 
-function getConfigParameters()
+getConfigParameters()
 {
     echo "$SCRIPT_NAME: getting config parameter from $V2X_CONF"
     placeholderEntry=$(grep is-placeholder-firmware $V2X_CONF | cut -d'=' -f2)
-    if [[ "${placeholderEntry}" != "" && "${placeholderEntry}" == "true" ]]; then
+    if [ "${placeholderEntry}" != "" ] && [ "${placeholderEntry}" = "true" ]; then
         IS_PLACEHOLDER_FW=true
     fi
 }
 
-function enableTheModule()
+enableTheModule()
 {
-    local pwrGpio
     pwrGpio="$(gpiofind UM_SUP_EN)"
 
     echo "$SCRIPT_NAME: releasing v2x reset..."
@@ -54,22 +55,21 @@ function enableTheModule()
     echo "$SCRIPT_NAME: toggling v2x module power..."
     gpioset -m time -s 1 $pwrGpio=0
     gpioset -m signal $pwrGpio=1 &
-    PWR_GPIO_PID=$!
 }
 
-function detectDfuMode()
+detectDfuMode()
 {
-    local timeoutS=30
+    timeoutS=30
 
     echo "$SCRIPT_NAME: discovering DFU mode of v2x module (timeout=${timeoutS}s)..."
     timeout $timeoutS bash -c -- 'while true; do lsusb | grep "0483:df11"; if [ $? == 0  ]; then break; fi; done'
-    if [ $? == 124 ]; then
+    if [ $? = 124 ]; then
         echo "ERROR: v2x module is not available on usb bus"
         exit 1
     fi
 }
 
-function loadFirmware()
+loadFirmware()
 {
     echo "$SCRIPT_NAME: loading v2x firmware..."
     output=$(dfu-util -d 0483:df11 -s 0x10000000 -D /lib/firmware/v2x/SECTON.packed_bin.rom 2>&1)
@@ -112,7 +112,7 @@ getConfigParameters
 
 enableTheModule
 
-if [ $IS_PLACEHOLDER_FW == true ]; then
+if [ $IS_PLACEHOLDER_FW = true ]; then
     echo "$SCRIPT_NAME: v2x placeholder firmware configured"
     exit 0
 fi