diff --git a/recipes-go/3mdeb-rtectrl/3mdeb-rtectrl/flash.sh b/recipes-go/3mdeb-rtectrl/3mdeb-rtectrl/flash.sh
new file mode 100755
index 0000000..428a183
--- /dev/null
+++ b/recipes-go/3mdeb-rtectrl/3mdeb-rtectrl/flash.sh
@@ -0,0 +1,347 @@
+#!/bin/sh
+
+errorExit() {
+  errorMessage="$1"
+  echo "$errorMessage"
+  exit 1
+}
+
+errorCheck() {
+  errorCode=$?
+  errorMessage="$1"
+  [ "$errorCode" -ne 0 ] && errorExit "$errorMessage : ($errorCode)"
+}
+
+usage() {
+  echo "${0} [COMMAND] [OPTIONS]"
+  echo "[COMMAND]:"
+  echo "    help - show this help"
+  echo "    probe - probe flash"
+  echo "    read [FILE] - read flash to FILE"
+  echo "    write [FILE] - write flash from FILE"
+  echo "    wp-list - check WP list"
+  echo "    wp-status - check WP status"
+  echo "    wp-enable - enable WP"
+  echo "    wp-disable - disable WP"
+  echo "    wp-high - enable hardware protection of status registers"
+  echo "    wp-low -disable hardware protection of status registers"
+  echo "[OPTIONS]:"
+  echo "    -V --voltage [VOLTAGE] - specify SPI voltage to be used: 1.8V or 3.3V"
+  echo "    --flashrom-params \"[PARAMS]\" - specify additional flashrom params surrounded"
+  echo "    with double quotes"
+  echo "    -v --verbose - verbose mode"
+  echo "    -d --dry-run - run skript without executing commands"
+  echo "Examples:"
+  echo "${0} probe"
+  echo "${0} read flash.rom"
+  echo "${0} write flash.rom"
+  exit 0
+}
+
+SPI_DEV="/dev/spidev1.0"
+SPI_SPEED="16000"
+FLASHROM_PROGRAMMER="linux_spi:dev=$SPI_DEV,spispeed=$SPI_SPEED"
+
+WP_RANGE="0,0x00800000"
+
+[ $# -eq 0 ] && usage
+
+spiON() {
+  if [ "$VOLTAGE" = "3.3V" ]; then
+    echo "Setting SPI VCC to 3.3V"
+    # 0 - 1.8V, 1 - 3.3V:
+    if [ -n "$DRY_RUN" ]; then
+      echo "echo 1 > /sys/class/gpio/gpio517/value"
+    else
+      echo 1 > /sys/class/gpio/gpio517/value
+    fi
+  else
+    echo "Setting SPI VCC to 1.8V"
+
+    # 0 - 1.8V, 1 - 3.3V:
+    if [ -n "$DRY_RUN" ]; then
+      echo "echo 0 > /sys/class/gpio/gpio517/value"
+    else
+      echo 0 > /sys/class/gpio/gpio517/value
+    fi
+  fi
+
+  sleep 1
+
+  echo "SPI lines ON"
+
+  if [ -z "$DRY_RUN" ]; then
+    echo 1 > /sys/class/gpio/gpio516/value
+  else
+    echo 'echo 1 > /sys/class/gpio/gpio516/value'
+  fi
+
+  sleep 1
+  echo "SPI Vcc ON"
+
+  if [ -z "$DRY_RUN" ]; then
+    echo 1 > /sys/class/gpio/gpio518/value
+  else
+    echo 'echo 1 > /sys/class/gpio/gpio518/value'
+  fi
+
+  sleep 2
+
+  return 0
+}
+
+spiOFF() {
+  echo "SPI Vcc OFF"
+
+  if [ -z "$DRY_RUN" ]; then
+    echo 0 > /sys/class/gpio/gpio518/value
+  else
+    echo 'echo 0 > /sys/class/gpio/gpio518/value'
+  fi
+
+  echo "SPI lines OFF"
+
+  if [ -z "$DRY_RUN" ]; then
+    echo 0 > /sys/class/gpio/gpio516/value
+    echo 0 > /sys/class/gpio/gpio517/value
+  else
+    echo 'echo 0 > /sys/class/gpio/gpio516/value'
+    echo 'echo 0 > /sys/class/gpio/gpio517/value'
+  fi
+
+  return 0
+}
+
+prase_args(){
+while [ "$#" != "0" ]; do
+  case $1 in
+    "help")
+      CMD="help"
+      return 0
+      ;;
+    "probe")
+      CMD="probe"
+      shift
+      ;;
+    "read")
+      CMD="read"
+      FILE="$2"
+
+      [ -z "$FILE" ] && errorExit "No file provided, check help, exiting..."
+
+      shift 2
+      ;;
+    "write")
+      CMD="write"
+      FILE="$2"
+
+      [ -z "$FILE" ] && errorExit "No file provided, check help, exiting..."
+      [ -f "$FILE" ] || errorExit "Cannot read the $FILE file, exiting..."
+
+      shift 2
+      ;;
+    "wp-list")
+      CMD="wp-list"
+      shift
+      ;;
+    "wp-status")
+      CMD="wp-status"
+      shift
+      ;;
+    "wp-enable")
+      CMD="wp-enable"
+      shift
+      ;;
+    "wp-disable")
+      CMD="wp-disable"
+      shift
+      ;;
+    "erase")
+      CMD="erase"
+      shift
+      ;;
+    "wp-high")
+      CMD="wp-high"
+      shift
+      ;;
+    "wp-low")
+      CMD="wp-low"
+      shift
+      ;;
+    "-V" | "--voltage")
+      VOLTAGE="$2"
+      shift 2
+      ;;
+    "--flashrom-params")
+      FLASHROM_PARAMS="$2"
+      shift 2
+      ;;
+    "-v" | "--verbose")
+      set -o xtrace
+      PS4='+(${BASH_SOURCE}:${LINENO}): ${FUNCNAME[0]:+${FUNCNAME[0]}(): }'
+      shift
+      ;;
+    "-d" | "--dry-run")
+      DRY_RUN="true"
+      shift
+      ;;
+    *)
+      errorExit "$1: unknown argument, check help, exiting..."
+      ;;
+    esac
+  done
+
+  return 0
+}
+
+prase_args "$@"
+
+case "$CMD" in
+  "help")
+    usage
+    ;;
+  "probe")
+    spiON
+    echo "Probing ..."
+
+    if [ -z "$DRY_RUN" ]; then
+      flashrom -p "$FLASHROM_PROGRAMMER" $FLASHROM_PARAMS
+    else
+      echo flashrom -p "$FLASHROM_PROGRAMMER" "$FLASHROM_PARAMS"
+    fi
+
+    sleep 1
+    spiOFF
+  ;;
+  "read")
+    spiON
+    echo "Reading flash and writing it into $FILE..."
+
+    if [ -z "$DRY_RUN" ]; then
+      flashrom -p "$FLASHROM_PROGRAMMER" $FLASHROM_PARAMS -r "$FILE" -V
+    else
+      echo flashrom -p "$FLASHROM_PROGRAMMER" "$FLASHROM_PARAMS" -r "$FILE" -V
+    fi
+
+    sleep 1
+    spiOFF
+  ;;
+  "write")
+    spiON
+    echo "Writing data from $FILE into flash..."
+
+    if [ -z "$DRY_RUN" ]; then
+      flashrom -p "$FLASHROM_PROGRAMMER" $FLASHROM_PARAMS -w "$FILE"
+    else
+      echo flashrom -p "$FLASHROM_PROGRAMMER" "$FLASHROM_PARAMS" -w "$FILE"
+    fi
+
+    sleep 1
+    spiOFF
+  ;;
+  "wp-list")
+    spiON
+    echo "Checking WP list ..."
+
+    if [ -z "$DRY_RUN" ]; then
+      flashrom -p "$FLASHROM_PROGRAMMER" $FLASHROM_PARAMS --wp-list
+    else
+      echo flashrom -p "$FLASHROM_PROGRAMMER" "$FLASHROM_PARAMS" --wp-list
+    fi
+
+    sleep 1
+    spiOFF
+  ;;
+  "wp-status")
+    spiON
+    echo "Checking WP status ..."
+
+    if [ -z "$DRY_RUN" ]; then
+      flashrom -p "$FLASHROM_PROGRAMMER" $FLASHROM_PARAMS --wp-status
+    else
+      echo flashrom -p "$FLASHROM_PROGRAMMER" "$FLASHROM_PARAMS" --wp-status
+    fi
+
+    sleep 1
+    spiOFF
+  ;;
+  "wp-enable")
+    spiON
+    echo "Setting WP region ..."
+
+    if [ -z "$DRY_RUN" ]; then
+      flashrom -p "$FLASHROM_PROGRAMMER" $FLASHROM_PARAMS --wp-range="$WP_RANGE"
+    else
+      echo flashrom -p "$FLASHROM_PROGRAMMER" "$FLASHROM_PARAMS" --wp-range="$WP_RANGE"
+    fi
+
+    sleep 1
+    echo "Enabling WP region ..."
+
+    if [ -z "$DRY_RUN" ]; then
+      flashrom -p "$FLASHROM_PROGRAMMER" $FLASHROM_PARAMS --wp-enable
+    else
+      echo flashrom -p "$FLASHROM_PROGRAMMER" "$FLASHROM_PARAMS" --wp-enable
+    fi
+
+    sleep 1
+    spiOFF
+  ;;
+  "wp-disable")
+    spiON
+    echo "Disabling WP protection ..."
+
+    if [ -z "$DRY_RUN" ]; then
+      flashrom -p "$FLASHROM_PROGRAMMER" $FLASHROM_PARAMS --wp-disable
+    else
+      echo flashrom -p "$FLASHROM_PROGRAMMER" "$FLASHROM_PARAMS" --wp-disable
+    fi
+
+    sleep 1
+    echo "Clearing WP region ..."
+
+    if [ -z "$DRY_RUN" ]; then
+      flashrom -p "$FLASHROM_PROGRAMMER" $FLASHROM_PARAMS --wp-range=0,0
+    else
+      echo flashrom -p "$FLASHROM_PROGRAMMER" "$FLASHROM_PARAMS" --wp-range=0,0
+    fi
+
+    sleep 1
+    spiOFF
+  ;;
+  "erase")
+    spiON
+    echo "Erasing chip ..."
+
+    if [ -z "$DRY_RUN" ]; then
+      flashrom -p "$FLASHROM_PROGRAMMER" $FLASHROM_PARAMS -E
+    else
+      echo flashrom -p "$FLASHROM_PROGRAMMER" "$FLASHROM_PARAMS" -E
+    fi
+
+    sleep 1
+    spiOFF
+  ;;
+  "wp-high")
+    echo "Setting WP pin HIGH ..."
+    # deassert WP pin to disable hardware protection of status registers:
+    if [ -z "$DRY_RUN" ]; then
+      echo "out" > /sys/class/gpio/gpio514/direction
+      echo "1" > /sys/class/gpio/gpio514/value
+    else
+      echo 'echo "out" > /sys/class/gpio/gpio514/direction'
+      echo 'echo "1" > /sys/class/gpio/gpio514/value'
+    fi
+    ;;
+  "wp-low")
+    echo "Setting WP pin LOW ..."
+    # assert WP pin to enable hardware protection of status registers:
+    if [ -z "$DRY_RUN" ]; then
+      echo "out" > /sys/class/gpio/gpio514/direction
+      echo "0"  > /sys/class/gpio/gpio514/value
+    else
+      echo 'echo "out" > /sys/class/gpio/gpio514/direction'
+      echo 'echo "0"  > /sys/class/gpio/gpio514/value'
+    fi
+    ;;
+  esac
diff --git a/recipes-go/3mdeb-rtectrl/3mdeb-rtectrl_git.bbappend b/recipes-go/3mdeb-rtectrl/3mdeb-rtectrl_git.bbappend
index 440f132..35ece41 100644
--- a/recipes-go/3mdeb-rtectrl/3mdeb-rtectrl_git.bbappend
+++ b/recipes-go/3mdeb-rtectrl/3mdeb-rtectrl_git.bbappend
@@ -3,11 +3,13 @@ FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
 SRC_URI:append = " \
     file://RteCtrl.cfg \
     file://RteCtrl.service \
+    file://flash.sh \
     "
 
 FILES:${PN} += " \
     ${sysconfdir}/RteCtrl.cfg \
     ${systemd_unitdir}/system/RteCtrl.service \
+    ${sbindir}/flash.sh \
     "
 
 do_install:append() {
@@ -17,6 +19,9 @@ do_install:append() {
 
     install -d ${D}${systemd_unitdir}/system/
     install -m 0644 ${WORKDIR}/RteCtrl.service ${D}${systemd_unitdir}/system/
+
+    install -d ${D}${sbindir}
+    install -m 0755 ${WORKDIR}/flash.sh ${D}${sbindir}/
 }
 
 SYSTEMD_PACKAGES = "${PN}"