diff --git a/install/mmdvm.sh b/install/mmdvm.sh
index b955422..2c751ea 100644
--- a/install/mmdvm.sh
+++ b/install/mmdvm.sh
@@ -577,6 +577,74 @@ WantedBy=multi-user.target
 
 EOF
 #
+#####################################################################################################################
+
+cat > /opt/data-file.sh <<- "EOF"
+#! /bin/bash
+###############################################################################
+#
+#                              CONFIGURATION
+#
+# Full path to DMR ID file, without final slash
+DMRIDPATH=/opt/data-files
+DMRIDFILE=${DMRIDPATH}/DMRIds.dat
+# DMR IDs now served by RadioID.net
+#DATABASEURL='https://ham-digital.org/status/users.csv'
+DATABASEURL='https://www.radioid.net/static/user.csv'
+#
+# How many DMR ID files do you want backed up (0 = do not keep backups)
+DMRFILEBACKUP=1
+#
+# Command line to restart MMDVMHost
+#RESTARTCOMMAND="sudo systemctl restart mmdvmh.service ""
+# RESTARTCOMMAND="killall MMDVMHost ; /path/to/MMDVMHost/executable/MMDVMHost /path/to/MMDVM/ini/file/MMDVM.ini"
+###############################################################################
+#
+# Do not edit below here
+#
+###############################################################################
+# Check we are root
+if [ "$(id -u)" != "0" ]
+then
+        echo "This script must be run as root" 1>&2
+        exit 1
+fi
+# Create backup of old file
+if [ ${DMRFILEBACKUP} -ne 0 ]
+then
+        cp ${DMRIDFILE} ${DMRIDFILE}.$(date +%d%m%y)
+fi
+# Prune backups
+BACKUPCOUNT=$(ls ${DMRIDFILE}.* | wc -l)
+BACKUPSTODELETE=$(expr ${BACKUPCOUNT} - ${DMRFILEBACKUP})
+if [ ${BACKUPCOUNT} -gt ${DMRFILEBACKUP} ]
+then
+        for f in $(ls -tr ${DMRIDFILE}.* | head -${BACKUPSTODELETE})
+        do
+               rm $f
+        done
+fi
+# Generate new file
+#sh /opt/XLXHostsupdate.sh
+wget https://www.radioid.net/static/nxdn.csv -O /opt/data-files/NXDN.csv
+wget http://www.pistar.uk/downloads/YSF_Hosts.txt -O /opt/data-files/YSF_Hosts.txt
+wget http://www.pistar.uk/downloads/FCS_Hosts.txt -O /opt/data-files/FCS_Hosts.txt
+wget http://www.pistar.uk/downloads/TGList_BM.txt -O /opt/data-files/TGList-DMR.txt
+curl ${DATABASEURL} 2>/dev/null | sed -e 's/\t//g' | awk -F"," '/,/{gsub(/ /, "", $2); printf "%s\t%s\t%s\n", $1, $2, $3}' | sed -e 's/\(.\) .*/\1/g' > ${DMRIDPATH}/DMRIds.tmp
+NUMOFLINES=$(wc -l ${DMRIDPATH}/DMRIds.tmp | awk '{print $1}')
+if [ $NUMOFLINES -gt 1 ]
+then
+   mv ${DMRIDPATH}/DMRIds.tmp ${DMRIDFILE}
+else
+   echo " ERROR during file update "
+   rm ${DMRIDPATH}/DMRIds.tmp
+fi
+# Restart ysf2dmr
+eval ${RESTARTCOMMAND}
+EOF
+###
+chmod +x /opt/data-file.sh
+sh /opt/data-file.sh
 
 ###############################################################################################################################