diff --git a/package/emortal/default-settings/files/99-default-settings b/package/emortal/default-settings/files/99-default-settings
index ae9ee0ae00..d13dfedb87 100755
--- a/package/emortal/default-settings/files/99-default-settings
+++ b/package/emortal/default-settings/files/99-default-settings
@@ -1,28 +1,31 @@
 #!/bin/sh
 
-uci set luci.main.lang=auto
-uci commit luci
+uci -q get system.@imm_init[0] > "/dev/null" || uci -q add system imm_init > "/dev/null"
 
-uci set fstab.@global[0].anon_mount=1
-uci commit fstab
+if ! uci -q get system.@imm_init[0].lang > "/dev/null"; then
+	uci -q set luci.main.lang="auto"
+	uci -q commit luci
 
-rm -f /www/luci-static/resources/view/status/include/50_dsl.js
-rm -f /www/luci-static/resources/view/status/include/70_ddns.js
-rm -f /www/luci-static/resources/view/status/include/80_minidlna.js
-rm -f /www/luci-static/resources/view/status/include/80_upnp.js
+	uci -q set system.@imm_init[0].lang="1"
+	uci -q commit system
+fi
 
-ln -sf /sbin/ip /usr/bin/ip
+if ! uci -q get system.@imm_init[0].anon_mount > "/dev/null"; then
+	uci -q set fstab.@global[0].anon_mount="1"
+	uci -q commit fstab
 
-[ -f '/bin/bash' ] && sed -i 's|root:x:0:0:root:/root:/bin/ash|root:x:0:0:root:/root:/bin/bash|g' /etc/passwd
+	uci -q set system.@imm_init[0].anon_mount="1"
+	uci -q commit system
+fi
 
-sed -i '/option disabled/d' /etc/config/wireless
-sed -i '/set wireless.radio${devidx}.disabled/d' /lib/wifi/mac80211.sh
-wifi up
+ln -sf "/sbin/ip" "/usr/bin/ip"
 
-sed -i '/log-facility/d' /etc/dnsmasq.conf
-echo 'log-facility=/dev/null' >> /etc/dnsmasq.conf
+[ ! -e "/bin/bash" ] || sed -i "s|root:x:0:0:root:/root:/bin/ash|root:x:0:0:root:/root:/bin/bash|g" "/etc/passwd"
 
-rm -rf /tmp/luci-modulecache/
-rm -f /tmp/luci-indexcache
+sed -i "/log-facility/d" "/etc/dnsmasq.conf"
+echo "log-facility=/dev/null" >> "/etc/dnsmasq.conf"
+
+rm -rf "/tmp/luci-modulecache"
+rm -f "/tmp/luci-indexcache"
 
 exit 0
diff --git a/package/emortal/default-settings/files/99-default-settings-chinese b/package/emortal/default-settings/files/99-default-settings-chinese
index c87e3ed8c4..dd24bda0f6 100755
--- a/package/emortal/default-settings/files/99-default-settings-chinese
+++ b/package/emortal/default-settings/files/99-default-settings-chinese
@@ -1,17 +1,23 @@
 #!/bin/sh
 
-uci -q batch <<-EOF
-	set system.@system[0].timezone='CST-8'
-	set system.@system[0].zonename='Asia/Shanghai'
+uci -q get system.@imm_init[0] > "/dev/null" || uci -q add system imm_init > "/dev/null"
 
-	delete system.ntp.server
-	add_list system.ntp.server='ntp.tencent.com'
-	add_list system.ntp.server='ntp1.aliyun.com'
-	add_list system.ntp.server='ntp.ntsc.ac.cn'
-	add_list system.ntp.server='cn.ntp.org.cn'
-EOF
-uci commit system
+if ! uci -q get system.@imm_init[0].system_chn > "/dev/null"; then
+	uci -q batch <<-EOF
+		set system.@system[0].timezone="CST-8"
+		set system.@system[0].zonename="Asia/Shanghai"
 
-sed -i 's,downloads.immortalwrt.org,mirrors.vsean.net/openwrt,g' /etc/opkg/distfeeds.conf
+		delete system.ntp.server
+		add_list system.ntp.server="ntp.tencent.com"
+		add_list system.ntp.server="ntp1.aliyun.com"
+		add_list system.ntp.server="ntp.ntsc.ac.cn"
+		add_list system.ntp.server="cn.ntp.org.cn"
+
+		set system.@imm_init[0].system_chn="1"
+		commit system
+	EOF
+fi
+
+sed -i.bak "s,downloads.immortalwrt.org,mirrors.vsean.net/openwrt,g" "/etc/opkg/distfeeds.conf"
 
 exit 0
diff --git a/package/emortal/ipv6-helper/files/60-6in4 b/package/emortal/ipv6-helper/files/60-6in4
index 270aad1f90..f297eb4846 100755
--- a/package/emortal/ipv6-helper/files/60-6in4
+++ b/package/emortal/ipv6-helper/files/60-6in4
@@ -1,12 +1,15 @@
 #!/bin/sh
 . /lib/functions.sh
+
 if [ "$ACTION" != "ifup" ]; then
     exit
 fi
+
 config_load network
-config_get tunnelid $INTERFACE tunnelid
-config_get username $INTERFACE username
-config_get password $INTERFACE password
+config_get tunnelid "$INTERFACE" tunnelid
+config_get username "$INTERFACE" username
+config_get password "$INTERFACE" password
+
 if [ "$tunnelid" != "" ]; then
-    wget -O - https://$username:$password@ipv4.tunnelbroker.net/nic/update?hostname=$tunnelid --no-check-certificate
+    wget -O - "https://$username:$password@ipv4.tunnelbroker.net/nic/update?hostname=$tunnelid"
 fi
diff --git a/package/emortal/ipv6-helper/files/60-ipv6-hybrid b/package/emortal/ipv6-helper/files/60-ipv6-hybrid
index e6450b259a..40efd986f5 100755
--- a/package/emortal/ipv6-helper/files/60-ipv6-hybrid
+++ b/package/emortal/ipv6-helper/files/60-ipv6-hybrid
@@ -1,9 +1,15 @@
 #!/bin/sh
 
-uci set dhcp.lan.ra='hybrid'
-uci set dhcp.lan.ndp='hybrid'
-uci set dhcp.lan.dhcpv6='hybrid'
-uci set dhcp.lan.ra_management='1'
-uci commit dhcp
+uci -q get system.@imm_init[0] > "/dev/null" || uci -q add system imm_init > "/dev/null"
+uci -q get system.@imm_init[0].ipv6 > "/dev/null" && exit 0
+
+uci -q set dhcp.lan.ra="hybrid"
+uci -q set dhcp.lan.ndp="hybrid"
+uci -q set dhcp.lan.dhcpv6="hybrid"
+uci -q set dhcp.lan.ra_management="1"
+uci -q commit dhcp
+
+uci -q set system.@imm_init[0].ipv6="1"
+uci -q commit system
 
 exit 0