diff --git a/installer/prereq.sh b/installer/prereq.sh
index 34f309b..33d0004 100755
--- a/installer/prereq.sh
+++ b/installer/prereq.sh
@@ -44,9 +44,10 @@ if ! command -v node &>/dev/null; then
     curl -sL https://deb.nodesource.com/setup_16.x | bash -
     apt-get -y install nodejs
 else
-    version=$(node -v)
-    if [[ ! $version =~ v16\..* ]]; then
-        echo "Found node $version, recommended node v16.x.x"
+    version=$(node -v | cut -d '.' -f1)
+    version=${version:1}
+    if [[ $version -lt 16 ]]; then
+        echo "Found node $version, recommended node v16.x.x or later"
     fi
 fi
 
@@ -63,6 +64,12 @@ if [[ -z "$(lsmod | grep br_netfilter)" ]]; then
     echo "br_netfilter" >/etc/modules-load.d/br_netfilter.conf
 fi
 
+# Install ufw
+if ! command -v ufw &>/dev/null; then
+    stage "Installing ufw"
+    apt-get install -y ufw
+fi
+
 # -------------------------------
 # fstab changes
 # We do not edit original file, instead we create a temp file with original and edit it.
diff --git a/installer/sashimono-uninstall.sh b/installer/sashimono-uninstall.sh
index 4aa238a..9f49a10 100755
--- a/installer/sashimono-uninstall.sh
+++ b/installer/sashimono-uninstall.sh
@@ -17,8 +17,8 @@ function confirm() {
         read -p "'y' or 'n' expected: " yn </dev/tty
     done
 
-    echo "" # Insert new line after answering.
-    [[ $yn =~ ^[Yy]$ ]] && return 0 || return 1  # 0 means success.
+    echo ""                                     # Insert new line after answering.
+    [[ $yn =~ ^[Yy]$ ]] && return 0 || return 1 # 0 means success.
 }
 
 function cgrulesengd_servicename() {
@@ -87,10 +87,25 @@ if [ "$UPGRADE" == "0" ]; then
 
         echo "Deleting $ucount contract instances..."
         for user in "${sashiusers[@]}"; do
-            output=$($SASHIMONO_BIN/user-uninstall.sh $user | tee /dev/stderr)
+            homedir=$(eval echo ~$user)
+            cfgpath=$(find $homedir/ -type f -regex ^$homedir/[^/]+/cfg/hp.cfg$ 2>/dev/null | head -n 1)
+            instancename=$(echo $cfgpath | rev | cut -d '/' -f 3 | rev)
+            peerport=$(jq .mesh.port $cfgpath)
+            userport=$(jq .user.port $cfgpath)
+            output=$($SASHIMONO_BIN/user-uninstall.sh $user $peerport $userport $instancename | tee /dev/stderr)
             [ "${output: -10}" != "UNINST_SUC" ] && echo "Uninstall user '$user' failed. Aborting." && exit 1
         done
     fi
+
+    # Find if there are any garbage rules that are created by sashimono and remove them.
+    prefix="sashi"
+    ufw status | grep -E ^[0-9]+,[0-9]+/tcp\\s+ALLOW\\s+Anywhere\\s+\#\\s$prefix-.+$ | while read -r line; do
+        ports=$(echo $line | cut -d ' ' -f 1)
+        echo "Removing found garbage ufw $ports rule..."
+        p1=$(echo $ports | cut -d ',' -f 1)
+        p2=$(echo $ports | cut -d ',' -f 2 | cut -d '/' -f 1)
+        ufw delete allow "$p1","$p2"/tcp
+    done
 fi
 
 echo "Removing Sashimono cgroup creation service..."
@@ -157,9 +172,9 @@ if grep -q "^$MB_XRPL_USER:" /etc/passwd; then
     fi
 
     echo "Deleting message board user..."
-    # Killall command is not found in every linux systems, therefore pkill command is used. 
+    # Killall command is not found in every linux systems, therefore pkill command is used.
     # A small timeout(0.5 second) is applied before deleting the user because it takes some time to kill all the processes
-    loginctl disable-linger  $MB_XRPL_USER
+    loginctl disable-linger $MB_XRPL_USER
     pkill -u $MB_XRPL_USER # Kill any running processes.
     sleep 0.5
     userdel -f "$MB_XRPL_USER"
diff --git a/installer/setup.sh b/installer/setup.sh
index d5ba5bb..1333c2a 100755
--- a/installer/setup.sh
+++ b/installer/setup.sh
@@ -125,8 +125,9 @@ function GB() {
 function check_prereq() {
     # Check if node js installed.
     if command -v node &>/dev/null; then
-        version=$(node -v)
-        if [[ ! $version =~ v16\..* ]]; then
+        version=$(node -v | cut -d '.' -f1)
+        version=${version:1}
+        if [[ $version -lt 16 ]]; then
             echo "$evernode requires NodeJs 16.x or later. You system has NodeJs $version installed. Either remove the NodeJs installation or upgrade to NodeJs 16.x."
             exit 1
         fi
diff --git a/mb-xrpl/lib/appenv.js b/mb-xrpl/lib/appenv.js
index 3881c5e..9db4d5f 100644
--- a/mb-xrpl/lib/appenv.js
+++ b/mb-xrpl/lib/appenv.js
@@ -24,7 +24,7 @@ appenv = {
     ACQUIRE_LEASE_WAIT_TIMEOUT_THRESHOLD: 0.4,
     ORPHAN_PRUNE_SCHEDULER_INTERVAL_HOURS: 4,
     SASHI_CLI_PATH: appenv.IS_DEV_MODE ? "../build/sashi" : "/usr/bin/sashi",
-    MB_VERSION: '0.5.9',
+    MB_VERSION: '0.5.10',
     TOS_HASH: '757A0237B44D8B2BBB04AE2BAD5813858E0AECD2F0B217075E27E0630BA74314' // This is the sha256 hash of TOS text.
 }
 Object.freeze(appenv);
diff --git a/src/version.hpp b/src/version.hpp
index 7ef5e10..e6695f5 100644
--- a/src/version.hpp
+++ b/src/version.hpp
@@ -6,7 +6,7 @@
 namespace version
 {
     // Sashimono agent version. Written to new configs.
-    constexpr const char *AGENT_VERSION = "0.5.9";
+    constexpr const char *AGENT_VERSION = "0.5.10";
 
     // Minimum compatible config version (this will be used to validate configs).
     constexpr const char *MIN_CONFIG_VERSION = "0.5.0";