diff --git a/install.sh b/install.sh
index f922ca2..c707c06 100644
--- a/install.sh
+++ b/install.sh
@@ -134,28 +134,61 @@ on_install() {
   # Extend/change the logic to whatever you want
   ## ui_print "- Extracting module files"
   ## unzip -o "$ZIPFILE" 'system/*' -d $MODPATH >&2
-
-  # install v2ray execute file
-  ui_print "- Install V2Ray core $ARCH execute files"
+  # prepare v2ray execute environment
+  ui_print "- Prepare V2Ray execute environment."
+  mkdir -p /data/v2ray
+  mkdir -p /data/v2ray/run
   mkdir -p $MODPATH/scripts
   mkdir -p $MODPATH/system/bin
   mkdir -p $MODPATH/system/etc
-  unzip -j -o "$ZIPFILE" 'v2ray/scripts/*' -d $MODPATH/scripts >&2
-  unzip -j -o "$ZIPFILE" "v2ray/bin/$ARCH/*" -d $MODPATH/system/bin >&2
-  [ -f $MODPATH/system/bin/v2ray-dns.keeper ] && mv $MODPATH/system/bin/v2ray-dns.keeper $MODPATH/scripts >&2
+
+  # download latest v2ray core from official link
+  ui_print "- Connect official V2Ray download link."
+  official_v2ray_link="https://github.com/v2ray/v2ray-core/releases"
+  latest_v2ray_version=`curl -s -I "${official_v2ray_link}/latest" | grep Location | grep -o "tag.*" | grep -o "v[0-9.]*"`
+  if [ "${latest_v2ray_version}" = "" ] ; then
+    ui_print "Error: Connect official V2Ray download link failed." 
+    exit 1
+  fi
+  ui_print "- Download latest V2Ray core ${latest_v2ray_version}-${ARCH}"
+  case "${ARCH}" in
+    arm)
+      download_v2ray_link="${official_v2ray_link}/download/${latest_v2ray_version}/v2ray-linux-arm.zip"
+      ;;
+    arm64)
+      download_v2ray_link="${official_v2ray_link}/download/${latest_v2ray_version}/v2ray-linux-arm64.zip"
+      ;;
+    x86)
+      download_v2ray_link="${official_v2ray_link}/download/${latest_v2ray_version}/v2ray-linux-32.zip"
+      ;;
+    x64)
+      download_v2ray_link="${official_v2ray_link}/download/${latest_v2ray_version}/v2ray-linux-64.zip"
+      ;;
+  esac
+  download_v2ray_zip="/data/v2ray/run/v2ray-core.zip"
+  curl "${download_v2ray_link}" -L -o "${download_v2ray_zip}" >&2
+  if [ "$?" != "0" ] ; then
+    ui_print "Error: Download V2Ray core failed."
+    exit 1
+  fi
+  
+  # install v2ray execute file
+  ui_print "- Install V2Ray core $ARCH execute files"
+  unzip -j -o "${download_v2ray_zip}" "geoip.dat" -d /data/v2ray >&2
+  unzip -j -o "${download_v2ray_zip}" "geosite.dat" -d /data/v2ray >&2
+  unzip -j -o "${download_v2ray_zip}" "v2ray" -d $MODPATH/system/bin >&2
+  unzip -j -o "${download_v2ray_zip}" "v2ctl" -d $MODPATH/system/bin >&2
+  unzip -j -o "${ZIPFILE}" 'v2ray/scripts/*' -d $MODPATH/scripts >&2
+  unzip -j -o "${ZIPFILE}" "v2ray/bin/$ARCH/v2ray-dns.keeper" -d $MODPATH/scripts >&2
+  rm "${download_v2ray_zip}"
 
   # copy v2ray data and config
   ui_print "- Copy V2Ray config and data files"
-  mkdir -p /data/v2ray
-  mkdir -p /data/v2ray/run
   [ -f /data/v2ray/softap.list ] || \
   echo "softap0" > /data/v2ray/softap.list
   [ -f /data/v2ray/resolv.conf ] || \
-  unzip -j -o "$ZIPFILE" "v2ray/etc/resolv.conf" -d /data/v2ray >&2
-  unzip -j -o "$ZIPFILE" "v2ray/etc/geosite.dat" -d /data/v2ray >&2
-  unzip -j -o "$ZIPFILE" "v2ray/etc/geoip.dat" -d /data/v2ray >&2
-  unzip -j -o "$ZIPFILE" "v2ray/etc/config.json" -d /data/v2ray/run >&2
-  mv /data/v2ray/run/config.json /data/v2ray/config.json.template
+  unzip -j -o "${ZIPFILE}" "v2ray/etc/resolv.conf" -d /data/v2ray >&2
+  unzip -j -o "${ZIPFILE}" "v2ray/etc/config.json.template" -d /data/v2ray >&2
   [ -f /data/v2ray/config.json ] || \
   cp /data/v2ray/config.json.template /data/v2ray/config.json
   ln -s /data/v2ray/resolv.conf $MODPATH/system/etc/resolv.conf
diff --git a/module.prop b/module.prop
index ac908e9..cba5a1c 100644
--- a/module.prop
+++ b/module.prop
@@ -1,6 +1,6 @@
 id=v2ray
 name=V2ray for Android
-version=v4.19.1
-versionCode=20190707
+version=v4.20.0
+versionCode=20190713
 author=chendefine
 description=V2ray core with service scripts for Android
diff --git a/v2ray/etc/config.json.template b/v2ray/etc/config.json.template
new file mode 100644
index 0000000..0bf8721
--- /dev/null
+++ b/v2ray/etc/config.json.template
@@ -0,0 +1,194 @@
+// Config file of V2Ray. This file follows standard JSON format, with comments support.
+// Uncomment entries below to satisfy your needs. Also read our manual for more detail at
+// https://www.v2ray.com/
+{
+  "log": {
+    // By default, V2Ray writes access log to stdout.
+    // "access": "/path/to/access/log/file",
+
+    // By default, V2Ray write error log to stdout.
+    // "error": "/path/to/error/log/file",
+    "error": "/data/v2ray/run/error.log",
+
+    // Log level, one of "debug", "info", "warning", "error", "none"
+    "loglevel": "warning"
+  },
+  // List of inbound proxy configurations.
+  "inbounds": [{
+    // Just listen for DNS proxy.
+    "port": 65534,
+
+    // Tag of the inbound for DNS proxy routing.
+    "tag": "dns-in",
+
+    // DNS proxy protocol must be dokodemo-door.
+    "protocol": "dokodemo-door",
+
+    // Setting of DNS proxy.
+    "settings": {
+      "port": 53,
+      "address": "1.1.1.1",
+      "network": "tcp,udp"
+    }
+  },{
+    // Port to listen on. You may need root access if the value is less than 1024.
+    "port": 65535,
+
+    // IP address to listen on. Change to "0.0.0.0" to listen on all network interfaces.
+    "listen": "0.0.0.0",
+
+    // Tag of the inbound proxy. May be used for routing.
+    "tag": "proxy-inbound",
+
+    // Protocol name of inbound proxy.
+    "protocol": "dokodemo-door",
+
+    // Settings of the protocol. Varies based on protocol.
+    "settings": {
+      // Disable timeout setting for keeping persistent connection. Such as FCM.   
+      //  "timeout": 10,
+      "network": "tcp,udp",
+      "followRedirect": true
+    },
+
+    // Enable sniffing on TCP connection.
+    "sniffing": {
+      "enabled": true,
+      // Target domain will be overriden to the one carried by the connection, if the connection is HTTP or HTTPS.
+      "destOverride": ["http", "tls"]
+    }
+  }],
+  // List of outbound proxy configurations.
+  "outbounds": [{
+    // Replace your proxy protocol in this section, like: vmess or shadowsocks
+    "protocol": "freedom",
+
+    // Settings of the protocol. Varies based on protocol.
+    "settings": {},
+
+    // Tag of the outbound. May be used for routing.
+    "tag": "proxy"
+  },{
+    // Protocol name of the outbound proxy.
+    "protocol": "freedom",
+
+    // Settings of the protocol. Varies based on protocol.
+    "settings": {},
+
+    // Tag of the outbound. May be used for routing.
+    "tag": "direct"
+  },{
+    // DNS Proxy Outbond
+    "protocol": "dns",
+
+    // Tag of the outbound for DNS proxy routing.
+    "tag": "dns-out"
+  },{
+    "protocol": "blackhole",
+    "settings": {},
+    "tag": "blocked"
+  }],
+
+  // Transport is for global transport settings. If you have multiple transports with same settings
+  // (say mKCP), you may put it here, instead of in each individual inbound/outbounds.
+  //"transport": {},
+
+  // Routing controls how traffic from inbounds are sent to outbounds.
+  "routing": {
+    "domainStrategy": "IPOnDemand",
+    "rules":[
+      {
+        // Proxy DNS request
+        "type": "field",
+        "inboundTag": ["dns-in"],
+        "outboundTag": "dns-out"
+      },
+      {
+        // Bypass private IPs.
+        "type": "field",
+        "ip": ["geoip:private"],
+        "outboundTag": "direct"
+      },
+      {
+        // Bypass all china IPs.
+        "type": "field",
+        "ip": ["geoip:cn"],
+        "outboundTag": "direct"
+      },
+      {
+        // Bypass all china sites.
+        "type": "field",
+        "domain": ["geosite:cn"],
+        "outboundTag": "direct"
+      },
+      {
+        // Blocks major ads.
+        "type": "field",
+        "domain": ["geosite:category-ads"],
+        "outboundTag": "blocked"
+      }
+    ]
+  },
+
+  // Dns settings for domain resolution.
+  "dns": {
+    // Static hosts, similar to hosts file.
+    "hosts": {
+      // Match v2ray.com to another domain on CloudFlare. This domain will be used when querying IPs for v2ray.com.
+      "domain:v2ray.com": "www.vicemc.net",
+
+      // The following settings help to eliminate DNS poisoning in mainland China.
+      // It is safe to comment these out if this is not the case for you.
+      "domain:github.io": "pages.github.com",
+      "domain:wikipedia.org": "www.wikimedia.org",
+      "domain:shadowsocks.org": "electronicsrealm.com"
+    },
+    "servers": [
+      "1.1.1.1",
+      "8.8.8.8",
+      "9.9.9.9",
+      {
+        "address": "114.114.114.114",
+        "port": 53,
+        // List of domains that use this DNS first.
+        "domains": [
+          "geosite:cn"
+        ]
+      },
+      "localhost"
+    ]
+  },
+
+  // Policy controls some internal behavior of how V2Ray handles connections.
+  // It may be on connection level by user levels in 'levels', or global settings in 'system.'
+  "policy": {
+    // Connection policys by user levels
+    "levels": {
+      "0": {
+        "uplinkOnly": 0,
+        "downlinkOnly": 0
+      }
+    },
+    "system": {
+      "statsInboundUplink": false,
+      "statsInboundDownlink": false
+    }
+  },
+
+  // Stats enables internal stats counter.
+  // This setting can be used together with Policy and Api. 
+  //"stats":{},
+
+  // Api enables gRPC APIs for external programs to communicate with V2Ray instance.
+  //"api": {
+    //"tag": "api",
+    //"services": [
+    //  "HandlerService",
+    //  "LoggerService",
+    //  "StatsService"
+    //]
+  //},
+
+  // You may add other entries to the configuration, but they will not be recognized by V2Ray.
+  "other": {}
+}