diff --git a/cmake_targets/build_helper.bash b/cmake_targets/build_helper.bash
index 2f53d32c5020088d6033e901d3bbc11234377cb6..7a811205cf62415056aaebe932330b57bc7bb1ec 100755
--- a/cmake_targets/build_helper.bash
+++ b/cmake_targets/build_helper.bash
@@ -455,14 +455,6 @@ compile_hss() {
     return 1
 }
 
-
-TDB() {
-    
-    if [ $2 = "USRP" ]; then
-	echo_info "  8.2 [USRP] "
-    fi
- 
-
 install_nas_tools() {
     cd $1
     if [ ! -f .ue.nvram ]; then
@@ -474,16 +466,7 @@ install_nas_tools() {
         echo_success "generate .usim.nvram"
         ./usim_data --gen
     fi
-    ./ue_data --print
-    ./usim_data --print
-}
 
-install_nasmesh(){
-    echo_success "LOAD NASMESH IP DRIVER FOR UE AND eNB" 
-    (cd $OPENAIR2_DIR/NAS/DRIVER/MESH/RB_TOOL && make clean && make)
-    (cd $OPENAIR2_DIR && make clean && make nasmesh_netlink_address_fix.ko)
-    $SUDO rmmod nasmesh
-    $SUDO insmod $OPENAIR2_DIR/NAS/DRIVER/MESH/nasmesh.ko
 }
 
 ##################################
@@ -497,31 +480,26 @@ install_nasmesh(){
 # arg 5 is database name   (oai_db)
 create_hss_database(){
     EXPECTED_ARGS=5
-    E_BADARGS=65
-    MYSQL=`which mysql`
-    rv=0
     if [ $# -ne $EXPECTED_ARGS ]
     then
-        echo_fatal "Usage: $0 dbuser dbpass hssuser hsspass databasename"
-        rv=1
+        echo_error "Usage: $0 dbuser dbpass hssuser hsspass databasename"
+	return 1
     fi
     
-    # removed %
-    #Q1="GRANT ALL PRIVILEGES ON *.* TO '$3'@'%' IDENTIFIED BY '$4' WITH GRANT OPTION;"
     Q1="GRANT ALL PRIVILEGES ON *.* TO '$3'@'localhost' IDENTIFIED BY '$4' WITH GRANT OPTION;"
     Q2="FLUSH PRIVILEGES;"
-    SQL="${Q1}${Q2}"
-    $MYSQL -u $1 --password=$2 -e "$SQL"
+    mysql -u $1 --password=$2 -e "${Q1}${Q2}"
     if [ $? -ne 0 ]; then
-	echo_error "$3 permissions failed"
+	echo_error "$3 permissions creation failed"
+	echo_error "verify root password for mysql is linux: mysql -u root --password=linux"
+	echo_error "if not, reset it to "linux" with sudo dpkg-reconfigure mysql-server-5.5"
 	return 1
     else
-	echo_success "$3 permissions succeeded"
+	echo_success "$3 permissions creation succeeded"
     fi
     
-    Q1="CREATE DATABASE IF NOT EXISTS ${BTICK}$5${BTICK};"
-    SQL="${Q1}"
-    $MYSQL -u $3 --password=$4 -e "$SQL"
+    Q3="CREATE DATABASE IF NOT EXISTS $5;"
+    mysql -u $3 --password=$4 -e "${Q3}"
     if [ $? -ne 0 ]; then
 	echo_error "$5 creation failed"
 	return 1
@@ -529,17 +507,12 @@ create_hss_database(){
 	echo_success "$5 creation succeeded"
     fi
     
-    # test if tables have been created
-    mysql -u $3 --password=$4  -e "desc $5.users" > /dev/null 2>&1
-    
-    if [ $? -eq 1 ]; then 
-        $MYSQL -u $3 --password=$4 $5 < $OPENAIRCN_DIR/OPENAIRHSS/db/oai_db.sql
-        if [ $? -ne 0 ]; then
-            echo_error "$5 tables creation failed"
-            return 1
-        else
-            echo_success "$5 tables creation succeeded"
-        fi
+    mysql -u $3 --password=$4 $5 < $OPENAIRCN_DIR/OPENAIRHSS/db/oai_db.sql
+    if [ $? -ne 0 ]; then
+        echo_error "$5 tables creation failed"
+        return 1
+    else
+        echo_success "$5 tables creation succeeded"
     fi
     return 0
 }
diff --git a/cmake_targets/build_oai.bash b/cmake_targets/build_oai.bash
index a0183a421bdad800ccf23eaeedf8c37a4b754e11..27fb2d98f931321dd350c30948920347feaa434e 100755
--- a/cmake_targets/build_oai.bash
+++ b/cmake_targets/build_oai.bash
@@ -35,6 +35,7 @@
 ################################
 # include helper functions
 ################################
+ORIGIN_PATH=$PWD
 THIS_SCRIPT_PATH=$(dirname $(readlink -f $0))
 source $THIS_SCRIPT_PATH/build_helper.bash
 
@@ -219,10 +220,10 @@ if [ "$UE" = 1 ] ; then
 	CMakeFiles/ue_ip/ue_ip.ko $dbin/ue_ip.ko
     compilations \
 	lte_build_oai usim_data \
-	usim_data $dbin/usim_data.$REL
+	usim_data $dbin/usim_data
     compilations \
 	lte_build_oai ue_data \
-	ue_data $dbin/ue_data.$REL
+	ue_data $dbin/ue_data
 fi
 
 if [ "$SIMUS_PHY" = "1" ] ; then
@@ -308,21 +309,26 @@ if [ "$INSTALL_SYSTEM_FILES" = "1" ] ;then
     echo_info "Copying iptables libraries into system directory: /lib/xtables"
     $SUDO ln -s $dbin/libxt_GTPURH_lib.so /lib/xtables/libxt_GTPURH.so
     $SUDO ln -s $dbin/libxt_GTPUAH_lib.so /lib/xtables/libxt_GTPUAH.so
+
 fi
 
 # Install config file
 ###################
 if [ "$CONFIG_FILE" != "" ] ; then
-    # may be relative path 
-    if [ -f $(dirname $(readlink -f $0))/$CONFIG_FILE ]; then
-        CONFIG_FILE=$(dirname $(readlink -f $0))/$CONFIG_FILE
-    fi
-    if [ -s $CONFIG_FILE ]; then
-            echo_info "Copy config file in $dbin"
-	    cp $CONFIG_FILE $dbin
-    else
-        echo_error "config file not found"        fi
-    fi
+
+    dconf=$DIR/conf
+    mkdir -p $dconf
+    cp $ORIGIN_PATH/$CONFIG_FILE $dconf || echo_fatal "config file $ORIGIN_PATH/$CONFIG_FILE not found"
+
+    # generate USIM data
+    install_nas_tools $dbin $dconf
+
+    # Do HSS 
+    # bash doesn't like space char around = char
+    sed -e 's/ *= */=/' $OPENAIRCN_DIR/OPENAIRHSS/conf/hss.local.conf > $dconf/hss.local.conf
+    source $dconf/hss.local.conf
+    create_hss_database root linux "$MYSQL_user" "$MYSQL_pass" "$MYSQL_db"
+
 fi 
 
 # Auto-tests 
@@ -342,32 +348,7 @@ exit 0
 # configure and compile
 ##########################################
 
-    echo_info "5. configure and compile epc"
 
-    if [ $CONFIG_FILE_ACCESS_OK -eq 0 ]; then
-        echo_error "You have to provide a EPC config file"
-        exit 1
-    else
-	# Perform some coherency checks
-	# check  HSS_HOSTNAME REALM
-    fi
-    
-######################################
-# Check certificates                 #
-######################################
-  
-    TEMP_FILE=`tempfile`
-    cat $OPENAIRCN_DIR/OPENAIRHSS/conf/hss_fd.conf | grep -w "Identity" | tr -d " " | tr -d ";" > $TEMP_FILE
-    cat $OPENAIRCN_DIR/OPENAIRHSS/conf/hss.conf    | grep -w "MYSQL_user" | tr -d " " | tr -d ";" >> $TEMP_FILE
-    cat $OPENAIRCN_DIR/OPENAIRHSS/conf/hss.conf    | grep -w "MYSQL_pass" | tr -d " " | tr -d ";" >> $TEMP_FILE
-    cat $OPENAIRCN_DIR/OPENAIRHSS/conf/hss.conf    | grep -w "MYSQL_db" | tr -d " " | tr -d ";" >> $TEMP_FILE
-    source $TEMP_FILE
-    rm -f  $TEMP_FILE
-
-    if [ x"$Identity" == "x" ]; then
-        echo_error "Your config file do not contain a host identity for S6A configuration"
-        exit 1
-    fi
     HSS_REALM=$(echo $Identity | sed 's/.*\.//')
     HSS_HOSTNAME=${Identity%.$HSS_REALM}
     NEW_HOSTNAME=`hostname -s`
@@ -495,5 +476,3 @@ else
     echo_info "11. No run requested, end of script"
     exit 0
 fi
-
-