diff --git a/README.md b/README.md
index 17715b3..b0ca46b 100644
--- a/README.md
+++ b/README.md
@@ -2,14 +2,69 @@
 
 ![飞天面条教保佑你的代码](https://cdn.rawgit.com/LunaGao/BlessYourCodeTag/master/tags/ramen.svg)
 
-## 由于portal升级，queryString等参数发生变化，脚本暂时失效
-
 ### Openwrt路由器自动安装
 在命令行中使用root权限运行以下代码即可
+不自动安装curl
+````shell
+wget --no-check-certificate https://raw.githubusercontent.com/somnifex/UPCNet/bash/autoinstallNoUpdate.sh && chmod +x autoinstallNoUpdate.sh && sh autoinstallNoUpdate.sh
 ````
-wget --no-check-certificate https://raw.githubusercontent.com/EndangeredF1sh/UPCNet/bash/autoinstall.sh && chmod +x autoinstall.sh && sh autoinstall.sh
+自动安装curl
+````shell
+wget --no-check-certificate https://raw.githubusercontent.com/somnifex/UPCNet/bash/autoinstall.sh && chmod +x autoinstall.sh && sh autoinstall.sh
 ````
+### Openwrt路由器配置IPV6中继Relay
+> 引用自[Yumao's Blog](https://www.yumao.name/read/openwrt-ipv6-bridge-or-nat6/)
+
+LUCI界面中LAN接口设置：
+```
+路由通告服务：中继
+DHCPv6服务：中继
+NDP代理：中继
+```
+检查/etc/config/dhcp文件中，lan的相关参数
+```
+config dhcp 'lan' 
+    option ra "relay"
+    option dhcp "relay"
+    option ndp "relay"
+```
+修改 /etc/config/dhcp文件中，wan的相关参数
+```
+config dhcp 'wan'
+    option interface 'wan' 
+    option dhcpv6 'relay' 
+    option ra 'relay' 
+    option ndp 'relay' 
+    option master '1' 
+
+```
+添加计划任务
+```shell
+* * * * * /root/ipv6-bridge.sh
+```
+/root/ipv6-bridge.sh如下：
+```shell
+#!/bin/sh
+if [ -n "`ip -6 route show default|grep from -m 1`" ];then
+    logger -t "IPV6" change default gateway without from source
+    DEFAULT=`ip -6 route show default|grep from -m 1`
+    #刪除默認路由
+    ip -6 route del ${DEFAULT}
+    #添加無from source路由
+    ip -6 route add `echo ${DEFAULT}|sed -e 's/from [^ ]* //'`
+    #添加子網内設備通過br-lan訪問
+    ip -6 route add `echo ${DEFAULT}|grep from|awk '{printf $3}'` dev br-lan metric 128
+fi
+#刪除之前自動添加的錯誤路由 
+ip -6 route list|grep -v default|grep -v br-lan|grep static|while read -r s; do ip -6 route del $s; done
+#可選：可以根據需求自定義SUBNETEX的值，UPC校园网为240c
+SUBNETEX="240c:"
+ip -6 route list|grep -v default|grep -v br-lan|grep ${SUBNETEX}|while read -r s; do ip -6 route del $s; done
 
+```
+```shell
+chmod +x /root/ipv6-bridge.sh
+```
 ### 手动安装方法（其他Linux发行版，暂不支持pandavan）
 在UPCNet.sh文件下输入学号(username)、密码(password)和运营商编号(service)，然后运行
 ```
diff --git a/UPCNet.sh b/UPCNet.sh
index 8378812..87b4d8d 100644
--- a/UPCNet.sh
+++ b/UPCNet.sh
@@ -1,23 +1,40 @@
+cat=""
+back=""
 username=""
 password=""
 service=""
+usernameB=""
+passwordB=""
+serviceB=""
+
 DATE=`date +%Y-%m-%d-%H:%M:%S`
-tries=0
-echo --- my_watchdog start ---
-while [[ $tries -lt 3 ]]
+echo "Start detecting network connection status......"
+ip_list="47.104.38.82,218.30.118.6,61.241.129.110"
+ips=$(echo "$ip_list" | tr ',' ' ')
+for ip in $ips
 do
-        if /bin/ping -c 1 114.114.114.114 >/dev/null
+        if /bin/ping -c 1 "$ip" >/dev/null
         then
-                echo --- exit ---
+                echo "The network connection is normal, enjoy~"
+                echo "---close script---"
                 exit 0
         fi
-        tries=$((tries+1))
-        sleep 1
 done
+sleep 1
+echo "!!!ERROR: Network connection exception!!!"
+echo "Start writing to the log and execute the login script..."
+echo $DATE network offline and try to restart... ... >>my_watchdog.log
+# /etc/init.d/network restart
+# 重启网卡需要吗？
+# sleep 3
 
-echo $DATE network restart >>my_watchdog.log
-/etc/init.d/network restart
-sleep 10
+if [ $cat == 2 ]
+then
+        uci set openclash.config.enable='0'
+        uci commit openclash
+        /etc/init.d/openclash stop
+        sleep 10
+fi
 parameter='userId='${username}'&password='${password}'&service='${service}'&queryString='
 location='http://121.251.251.207/eportal/InterFace.do?method=login'
 url=`curl -Ls -A "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36" -o /dev/null -w %{url_effective} http://121.251.251.217`
@@ -27,5 +44,60 @@ url=${url//&/%2526}
 url=${url//:/%253A}
 url=${url//\//%252F}
 parameter=${parameter}${url}'&operatorPwd=&operatorUserId=&validcode=&passwordEncrypt=false'
-echo $parameter
+# echo $parameter
+echo -e "Try to log in using the primary account\n"
 curl -X POST -d $parameter $location
+sleep 8
+if [ $back == 2 ]
+then
+for ip in $ips
+do
+        if /bin/ping -c 1 "$ip" >/dev/null
+        then
+                echo -e "\n"
+                echo "Log in with your primary account, the network is back to normal, enjoy~"
+                echo "---close script---"
+                if [ $cat == 2 ]
+                then
+                        uci set openclash.config.enable='1'
+                        uci commit openclash
+                        reboot
+                fi
+                sleep 15
+                exit 0
+        fi
+done
+for ip in $ips
+do
+        if /bin/ping -c 1 "$ip" >/dev/null
+        then
+                echo "The network connection is normal, enjoy~"
+                echo "---close script---"
+                exit 0
+        fi
+done
+echo -e "FAILED, Start trying to log in with an alternate account\n"
+parameterB='userId='${usernameB}'&password='${passwordB}'&service='${serviceB}'&queryString='
+parameterB=${parameterB}${url}'&operatorPwd=&operatorUserId=&validcode=&passwordEncrypt=false'
+# echo $parameterB
+curl -X POST -d $parameterB $location
+for ip in $ips
+do
+        if /bin/ping -c 1 "$ip" >/dev/null
+        then
+                echo -e "\n"
+                echo "Log in with your alternate account, the network is back to normal, enjoy~"
+                echo "---close script---"
+                if [ $cat == 2 ]
+                then
+                        uci set openclash.config.enable='1'
+                        uci commit openclash
+                        reboot
+                fi
+                sleep 15
+                exit 0
+
+        fi
+done
+echo "You can't sign in with your existing account. Please check your configuration and other network settings and close script"
+fi
diff --git a/autoinstall.sh b/autoinstall.sh
index 1a5b017..071641f 100644
--- a/autoinstall.sh
+++ b/autoinstall.sh
@@ -19,7 +19,13 @@ fi
 echo "Auto install start ..."
 opkg update
 opkg install curl
-wget --no-check-certificate https://raw.githubusercontent.com/EndangeredF1sh/UPCNet/bash/UPCNet.sh && chmod +x UPCNet.sh
+wget --no-check-certificate https://raw.githubusercontent.com/somnifex/UPCNet/bash/UPCNet.sh && chmod +x UPCNet.sh
+echo -n "If you have openclash? (1 for no, 2 for yes, default:1) -> "
+read cat
+cat=${cat:-1}
+echo -n "If Backup? (1 for no,2 for yes, default:1) -> "
+read bk
+bk=${bk:-1}
 echo -n "input stuID -> "
 read stuID
 echo -n "input password -> "
@@ -56,14 +62,65 @@ read -p "Enter selection [1-5] -> " num
 	if [[ $num == 5 ]]; then
 		service="local"
 	fi
+if [ $bk == 2 ]
+then
+echo -n "input stuID -> "
+read stuIDB
+echo -n "input password -> "
+read passwdB
+echo "Select your back service:
+1. Campus Network Service
+2. China Unicom Network Service
+3. China Mobile Network Service
+4. China Telecom Network Service
+5. Campus Intranet
+"
+read -p "Enter selection [1-5] -> " num
+	if [ $num -lt 1 ] || [ $num -gt 5 ];then
+	echo "invalid selection, exit."; 
+	exit;
+	fi
+ 
+	if [[ $num == 1 ]]; then
+		serviceB="default"
+	fi
+	
+	if [[ $num == 2 ]]; then
+		serviceB="unicom"
+	fi
+	
+	if [[ $num == 3 ]]; then
+		serviceB="cmcc"
+	fi
+	
+	if [[ $num == 4 ]]; then
+		serviceB="ctcc"
+	fi
 
+	if [[ $num == 5 ]]; then
+		serviceB="local"
+	fi
+fi
 
-sed -i '1,3d' UPCNet.sh
+if [ $bk == 2 ]
+then
+sed -i '1,8d' UPCNet.sh
+sed -i "1i cat=\"$cat\"" UPCNet.sh
+sed -i "1i back=\"$bk\"" UPCNet.sh
 sed -i "1i service=\"$service\"" UPCNet.sh
 sed -i "1i password=\"$passwd\"" UPCNet.sh
 sed -i "1i username=\"$stuID\"" UPCNet.sh
-
-
+sed -i "1i serviceB=\"$serviceB\"" UPCNet.sh
+sed -i "1i passwordB=\"$passwdB\"" UPCNet.sh
+sed -i "1i usernameB=\"$stuIDB\"" UPCNet.sh
+else
+sed -i '1,5d' UPCNet.sh
+sed -i "1i cat=\"$cat\"" UPCNet.sh
+sed -i "1i back=\"$bk\"" UPCNet.sh
+sed -i "1i service=\"$service\"" UPCNet.sh
+sed -i "1i password=\"$passwd\"" UPCNet.sh
+sed -i "1i username=\"$stuID\"" UPCNet.sh
+fi
 croncmd="sh ${SHELL_FOLDER}"/UPCNet.sh""
 cronjob="*/1 * * * * $croncmd"
 ( crontab -l | grep -v -F "$croncmd" ; echo "$cronjob" ) | crontab -
diff --git a/autoinstallNoUpdate.sh b/autoinstallNoUpdate.sh
new file mode 100644
index 0000000..27551cb
--- /dev/null
+++ b/autoinstallNoUpdate.sh
@@ -0,0 +1,129 @@
+os_release_path="/etc/os-release"
+openwrt_release_path="/etc/openwrt_release"
+SHELL_FOLDER=$(dirname $(readlink -f "$0"))
+if [ -f "$os_release_path" ];then
+	source /etc/os-release
+else
+	if [ -f "$openwrt_release_path" ];then
+		ID="openwrt"
+	fi
+fi
+	
+if [[ $ID != "openwrt" ]];then
+	read -r -p "Mismatch Operation System Detected, Are you sure to install? [Y/n] " response
+	if [[ $response != "y" && $response != "Y" ]];then
+		exit 0
+	fi
+fi
+
+echo "Auto install start ..."
+wget --no-check-certificate https://raw.githubusercontent.com/somnifex/UPCNet/bash/UPCNet.sh && chmod +x UPCNet.sh
+echo -n "If you have openclash? (1 for no, 2 for yes, default:1) -> "
+read cat
+cat=${cat:-1}
+echo -n "If Backup? (1 for no,2 for yes, default:1) -> "
+read bk
+bk=${bk:-1}
+echo -n "input stuID -> "
+read stuID
+echo -n "input password -> "
+read passwd
+echo "Select your service:
+1. Campus Network Service
+2. China Unicom Network Service
+3. China Mobile Network Service
+4. China Telecom Network Service
+5. Campus Intranet
+"
+read -p "Enter selection [1-5] -> " num
+	if [ $num -lt 1 ] || [ $num -gt 5 ];then
+	echo "invalid selection, exit."; 
+	exit;
+	fi
+ 
+	if [[ $num == 1 ]]; then
+		service="default"
+	fi
+	
+	if [[ $num == 2 ]]; then
+		service="unicom"
+	fi
+	
+	if [[ $num == 3 ]]; then
+		service="cmcc"
+	fi
+	
+	if [[ $num == 4 ]]; then
+		service="ctcc"
+	fi
+
+	if [[ $num == 5 ]]; then
+		service="local"
+	fi
+if [ $bk == 2 ]
+then
+echo -n "input stuID -> "
+read stuIDB
+echo -n "input password -> "
+read passwdB
+echo "Select your back service:
+1. Campus Network Service
+2. China Unicom Network Service
+3. China Mobile Network Service
+4. China Telecom Network Service
+5. Campus Intranet
+"
+read -p "Enter selection [1-5] -> " num
+	if [ $num -lt 1 ] || [ $num -gt 5 ];then
+	echo "invalid selection, exit."; 
+	exit;
+	fi
+ 
+	if [[ $num == 1 ]]; then
+		serviceB="default"
+	fi
+	
+	if [[ $num == 2 ]]; then
+		serviceB="unicom"
+	fi
+	
+	if [[ $num == 3 ]]; then
+		serviceB="cmcc"
+	fi
+	
+	if [[ $num == 4 ]]; then
+		serviceB="ctcc"
+	fi
+
+	if [[ $num == 5 ]]; then
+		serviceB="local"
+	fi
+fi
+
+if [ $bk == 2 ]
+then
+sed -i '1,8d' UPCNet.sh
+sed -i "1i cat=\"$cat\"" UPCNet.sh
+sed -i "1i back=\"$bk\"" UPCNet.sh
+sed -i "1i service=\"$service\"" UPCNet.sh
+sed -i "1i password=\"$passwd\"" UPCNet.sh
+sed -i "1i username=\"$stuID\"" UPCNet.sh
+sed -i "1i serviceB=\"$serviceB\"" UPCNet.sh
+sed -i "1i passwordB=\"$passwdB\"" UPCNet.sh
+sed -i "1i usernameB=\"$stuIDB\"" UPCNet.sh
+else
+sed -i '1,5d' UPCNet.sh
+sed -i "1i cat=\"$cat\"" UPCNet.sh
+sed -i "1i back=\"$bk\"" UPCNet.sh
+sed -i "1i service=\"$service\"" UPCNet.sh
+sed -i "1i password=\"$passwd\"" UPCNet.sh
+sed -i "1i username=\"$stuID\"" UPCNet.sh
+fi
+croncmd="sh ${SHELL_FOLDER}"/UPCNet.sh""
+cronjob="*/1 * * * * $croncmd"
+( crontab -l | grep -v -F "$croncmd" ; echo "$cronjob" ) | crontab -
+
+sed -i "2a ${croncmd}" /etc/rc.local
+
+echo "Auto Install Finished. Enjoy."
+rm -- "$0"