diff --git a/update_blocklist.sh b/update_blocklist.sh
index 91bbbf3..20a8568 100644
--- a/update_blocklist.sh
+++ b/update_blocklist.sh
@@ -1,17 +1,26 @@
 #!/bin/sh
-# /volume1/homes/admin/script/update_blocklist.sh
-# Script import IP's from blocklist.de 
-# https://www.synology-forum.de/showthread.html?103687-Freigabe-Blockierliste-automatisch-updaten&p=837478&viewfull=1#post837478
-# version 0.1 by Ruedi61,       15.11.2016 / DSM 6.0.3
-# version 0.2 by AndiHeitzer,   18.09.2019 / DSM 6.2.1 > add further Vars for DB
-# version 0.3 by geimist,       28.09.2019 / DSM 6.2.1 > add Stats / Loglevel / speed improvement / delete expired IPs
+# /volume3/DEV/update_blocklist.sh | tee /volume3/DEV/update_blocklist_$(date +%s).log
+
+#############################################################################################################################################
+# /volume1/homes/admin/script/update_blocklist.sh                                                                                           #
+#                                                                                                                                           #
+# Script import IP's from blocklist.de                                                                                                      #
+# https://www.synology-forum.de/showthread.html?103687-Freigabe-Blockierliste-automatisch-updaten&p=837478&viewfull=1#post837478            #
+# version 0.1 by Ruedi61,       15.11.2016 / DSM 6.0.3                                                                                      #
+# version 0.2 by AndiHeitzer,   18.09.2019 / DSM 6.2.1  > add further Vars for DB                                                           #
+# version 0.3 by geimist,       28.09.2019 / DSM 6.2.1  > add stats / loglevel / speed improvement / delete expired IPs                     #
+# version 0.4 by geimist,       24.05.2022 / DSM 7.1    > speed improvement over 5x                                                         #
+#                                                       (for 10000 IPs only 107 seconds are needed instead of 658 seconds)                  #
+#                                                                                                                                           #
+#############################################################################################################################################
+
 
 # Deny=1 > Blacklist / Deny=0 > Whitelist
     Deny=1
 # Download from www.blocklist.de | Select Typ: {all} {ssh} {mail} {apache} {imap} {ftp} {sip} {bots} {strongips} {ircbot} {bruteforcelogin} 
     BLOCKLIST_TYP="all" 
 # Delete IP after x Day's OR use 0 for permanent block 
-    DELETE_IP_AFTER="7"  
+    DELETE_IP_AFTER="5"  
 # Loglevel 1: Show Stats at the bottom / Loglevel 2: Show all / Loglevel 0: disable
     LOGLEVEL=1
 # 0=Single Host / 1=? / 2=IP-Range (META must be set) / 3=subnetmask (META must be set)
@@ -19,16 +28,43 @@
 # e.g. subnetmask / upper IP-Range
     META=''
 
-############################################################################################################### 
+#############################################################################################################################################
 # Do NOT change after here!
 
 # SQL Create-Statement for restore:
-# 'CREATE TABLE AutoBlockIP(IP varchar(50) PRIMARY KEY,RecordTime date NOT NULL,ExpireTime date NOT NULL,Deny boolean NOT NULL,IPStd varchr(50) NOT NULL,Type INTEGER,Meta varchar(256))'
+#   'CREATE TABLE AutoBlockIP(IP varchar(50) PRIMARY KEY,RecordTime date NOT NULL,ExpireTime date NOT NULL,Deny boolean NOT NULL,IPStd varchr(50) NOT NULL,Type INTEGER,Meta varchar(256))'
+
 if [ $(whoami) != "root" ]; then
     echo "WARNING: this script must run from root!" >&2
     exit 1
 fi
 
+progressbar() {
+# https://blog.cscholz.io/bash-progress-or-spinner/
+# Um die Progressbar darzustellen, muss ein Zähler (_start) und der Maximalwert (_end) definiert werden.
+#   _start=0
+#   _end=$(wc -l $1)
+#######################################
+# Display a progress bar
+# Arguments:
+#   $1 Current loop number
+#   $2 max. no of loops (1005)
+# Returns:
+#   None
+#######################################
+
+# Process data
+let _progress=(${1}*100/${2}*100)/100
+let _done=(${_progress}*4)/10
+let _left=40-$_done
+
+# Build progressbar string lengths
+_fill=$(printf "%${_done}s")
+_empty=$(printf "%${_left}s")
+
+printf "\rProgress :    [${_fill// /#}${_empty// /-}] ${_progress}%% ($1/$2)"
+}
+
 sec_to_time() {
     local seconds=$1
     local sign=""
@@ -42,68 +78,102 @@ sec_to_time() {
     printf "%s%02d:%02d:%02d" "$sign" $hours $minutes $seconds
 }
 
-countadded=0
-countskipped=0
-UNIXTIME=$(date +%s)
-UNIXTIME_DELETE_IP=$(date -d "+$DELETE_IP_AFTER days" +%s) 
+# create temporary working directory & prepare variables
+# ---------------------------------------------------------------------
+    work_tmp=$(mktemp -d -t tmp.XXXXXXXXXX)
+    trap 'rm -rf "$work_tmp"; exit' EXIT
+
+    before_list="${work_tmp}/before.txt"
+    online_list="${work_tmp}/online_list.txt"
+    blocklist_list="${work_tmp}/blocklist.txt"
+    sql_statement="${work_tmp}/insert_statement.sql"
+
+    countadded=0
+    db_path="/etc/synoautoblock.db"
+
+    UNIXTIME=$(date +%s)
+    UNIXTIME_DELETE_IP=$(date -d "+$DELETE_IP_AFTER days" +%s) 
+    [ ! -f "$db_path" ] && sqlite3 "$db_path" 'CREATE TABLE AutoBlockIP(IP varchar(50) PRIMARY KEY,RecordTime date NOT NULL,ExpireTime date NOT NULL,Deny boolean NOT NULL,IPStd varchr(50) NOT NULL,Type INTEGER,Meta varchar(256))'
 
 # count blocked IPs before:
-    countbefore=$(sqlite3 /etc/synoautoblock.db "SELECT count(IP) FROM AutoBlockIP WHERE Deny='1' " )
+    countbefore=$(sqlite3 "$db_path" "SELECT count(IP) FROM AutoBlockIP WHERE Deny='1' " )
+
 # delete IP if expired: 
-    CountExpiredIP=$(sqlite3 /etc/synoautoblock.db "SELECT count(IP) FROM AutoBlockIP WHERE ExpireTime <= $UNIXTIME AND Deny='1'")
-    sqlite3 /etc/synoautoblock.db "DELETE FROM AutoBlockIP WHERE ExpireTime <= $UNIXTIME AND Deny='1' "
+    CountExpiredIP=$(sqlite3 "$db_path" "SELECT count(IP) FROM AutoBlockIP WHERE ExpireTime <= $UNIXTIME AND Deny='1'")
+    sqlite3 "$db_path" "DELETE FROM AutoBlockIP WHERE ExpireTime <= $UNIXTIME AND Deny='1' "
+
 # current IP-list:
-    sqlite3 -header -csv /etc/synoautoblock.db "select IP FROM AutoBlockIP WHERE Deny='1' ORDER BY 'IP' ASC;" | sed -e '1d' | sort > /tmp/before.txt
+    sqlite3 -header -csv "$db_path" "select IP FROM AutoBlockIP WHERE Deny='1' ORDER BY 'IP' ASC;" | sed -e '1d' | sort > "$before_list"
+
 # load online IP-list:
-    curl --max-time 30 -s "https://lists.blocklist.de/lists/${BLOCKLIST_TYP}.txt" | sort > /tmp/onlinelist.txt
-# filter diffs:
-    diff "/tmp/before.txt" "/tmp/onlinelist.txt" | grep '^>' | sed -e 's/> //' > /tmp/blocklist.txt  # only diffs from left to right
+    wget -q --timeout=30 --tries=2 -nv -O - "https://lists.blocklist.de/lists/${BLOCKLIST_TYP}.txt" | sort | uniq > "$online_list"
+
+    if [ $(stat -c %s "$online_list") -eq 0 ] || [ ! -f "$online_list" ];then
+        echo -n "WARNING: The server blocklist.de is not available! Use alternative list -> "
+        wget -q --timeout=30 --tries=2 -nv -O - "https://mariushosting.com/wp-content/uploads/$(date +%Y/%m)/deny-ip-list.txt" | sort | uniq > "$online_list"
+        if echo "$wgetlog" | grep -q "failed" ; then
+            echo "failed!"
+            exit 1
+        else
+            echo "OK"
+        fi
+    fi
+
+# filter diffs - only diffs from left to right:
+    diff "$before_list" "$online_list" | grep '^>' | sed -e 's/> //' > "$blocklist_list" 
+
 # count of diffs:
-    countofdiffs=$(cat "/tmp/blocklist.txt" | grep -Eo "^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$" | wc -l)
+    countofdiffs=$(cat "$blocklist_list" | grep -Eo "^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$" | wc -l)
     echo "$countofdiffs IPs must be importet"
-    
-while read BLOCKED_IP 
-    do 
-        # Check if IP valid 
-        VALID_IPv4=$(echo "$BLOCKED_IP" | grep -Eo "^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$" | wc -l) 
-    
-        if [[ $VALID_IPv4 -eq 1 ]]; then 
-            # Convert IPv4 to IPv6 :) 
-            IPv4=$(echo $BLOCKED_IP | sed 's/\./ /g')
-            IPv6=$(printf "0000:0000:0000:0000:0000:FFFF:%02X%02X:%02X%02X" $IPv4)
-            CHECK_IF_EXISTS=$(sqlite3 /etc/synoautoblock.db "SELECT DENY FROM AutoBlockIP WHERE IP = '$BLOCKED_IP'" | wc -l)
-            if [[ $CHECK_IF_EXISTS -lt 1 ]]; then 
-                INSERT=$(sqlite3 /etc/synoautoblock.db "INSERT INTO AutoBlockIP VALUES ('$BLOCKED_IP','$UNIXTIME','$UNIXTIME_DELETE_IP','$Deny','$IPv6','$TYPE','$META')")
-                countadded=$(( $countadded + 1 ))
-                if [[ $LOGLEVEL -eq 2 ]]; then 
-                    echo "IP added to Database!    -->  $BLOCKED_IP" 
-                elif [[ $LOGLEVEL -eq 1 ]]; then
-                    echo -n "."
-                fi
-            else 
-                countskipped=$(( $countskipped + 1 ))
-                if [[ $LOGLEVEL -eq 1 ]] || [[ $LOGLEVEL -eq 2 ]]; then 
-                    echo -e; echo "IP already in Database!  -->  $BLOCKED_IP" 
-                fi
-            fi 
-        fi 
-    done < /tmp/blocklist.txt
+
+# progressbar:
+    progress_start=0
+    progress_end=$countofdiffs
+
+# beginn sql statement::
+    echo "INSERT OR IGNORE INTO AutoBlockIP ('IP', 'RecordTime', 'ExpireTime', 'Deny', 'IPStd', 'Type', 'Meta') VALUES " > "$sql_statement"
+
+while read BLOCKED_IP ; do 
+    # Check if IP valid 
+    VALID_IPv4=$(echo "$BLOCKED_IP" | grep -Eo "^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$" | wc -l) 
+
+    if [[ "$VALID_IPv4" -eq 1 ]]; then 
+        # Convert IPv4 to IPv6 :) 
+        IPv4=$(echo $BLOCKED_IP | sed 's/\./ /g')
+        IPv6=$(printf "0000:0000:0000:0000:0000:FFFF:%02X%02X:%02X%02X" $IPv4)
+
+        echo "('$BLOCKED_IP','$UNIXTIME','$UNIXTIME_DELETE_IP','$Deny','$IPv6','$TYPE','$META')," >> "$sql_statement"
+
+        countadded=$(( $countadded + 1 ))
+        if [[ $LOGLEVEL -eq 2 ]]; then 
+            echo "IP added to Database!    -->  $BLOCKED_IP" 
+        elif [[ $LOGLEVEL -eq 1 ]]; then
+            # progressbar:
+            let progress_start=progress_start+1
+            progressbar ${progress_start} ${progress_end}
+        fi
+    fi 
+done < "$blocklist_list"
+
+
+if [ "$countofdiffs" -ge 1 ] ; then
+    last_entry=$(cat "$sql_statement" | tail -n1)
+    sed -i  "s/$last_entry/${last_entry%,};/g" "$sql_statement"
+    printf "\n\nwrite DB ...\n"
+    sqlite3 "$db_path" < "$sql_statement"
+fi
 
 # stats …
 if [[ $LOGLEVEL -eq 1 ]] || [[ $LOGLEVEL -eq 2 ]]; then 
     echo -e; echo -e; 
-    echo "stats:----------------------------------"
+    echo "stats:--------------------------------"
     echo "duration of the process:      $(sec_to_time $(expr $(date +%s)-${UNIXTIME}) )" 
-    echo "count of IPs in list:         $(cat "/tmp/onlinelist.txt" | grep -Eo "^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$" | wc -l)"
+    echo "count of IPs in list:         $(cat "$online_list" | grep -Eo "^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$" | wc -l)"
     echo "count of diffs:               $countofdiffs"
     echo "added IPs:                    $countadded"
     echo "expired IPs (deleted):        $CountExpiredIP (set expiry time: $DELETE_IP_AFTER days)"
-    echo "skipped IPs:                  $countskipped"
-    echo "blocked IPs:                  before: $countbefore / current: $(sqlite3 /etc/synoautoblock.db "SELECT count(IP) FROM AutoBlockIP WHERE Deny='1' " )"
+    echo "blocked IPs:                  before: $countbefore / current: $(sqlite3 "$db_path" "SELECT count(IP) FROM AutoBlockIP WHERE Deny='1' " )"
 fi 
 
-rm /tmp/blocklist.txt 
-rm /tmp/before.txt
-rm /tmp/onlinelist.txt
 
 exit 0