diff --git a/README.md b/README.md
index 87b50d9..bc2ec71 100644
--- a/README.md
+++ b/README.md
@@ -31,24 +31,28 @@ installed: /etc/systemd/system/v2ray@.service
 ### 安裝 cURL
 
 ```
+# apt update
 # apt install curl
 ```
 
 or
 
 ```
+# yum makecache
 # yum install curl
 ```
 
 or
 
 ```
+# dnf makecache
 # dnf install curl
 ```
 
 or
 
 ```
+# zypper refresh
 # zypper install curl
 ```
 
@@ -94,3 +98,9 @@ usage: install-release.sh [--remove | --version number | -c | -f | -h | -l | -p]
   -l, --local     Install V2Ray from a local file
   -p, --proxy     Download through a proxy server, e.g., -p http://127.0.0.1:8118 or -p socks5://127.0.0.1:1080
 ```
+
+## 維護
+
+請於 [develop](https://github.com/v2fly/fhs-install-v2ray/tree/develop) 分支進行，以避免對主分支造成破壞。
+
+待確定無誤後，兩分支將進行合併。
diff --git a/install-dat-release.sh b/install-dat-release.sh
index c04cd35..6a0c652 100644
--- a/install-dat-release.sh
+++ b/install-dat-release.sh
@@ -17,6 +17,14 @@ V2RAY="/usr/local/lib/v2ray/"
 DOWNLOAD_LINK_GEOIP="https://github.com/v2ray/geoip/releases/latest/download/geoip.dat"
 DOWNLOAD_LINK_GEOSITE="https://github.com/v2ray/domain-list-community/releases/latest/download/dlc.dat"
 
+check_if_running_as_root() {
+    # If you want to run as another user, please modify $UID to be owned by this user
+    if [[ "$UID" -ne '0' ]]; then
+        echo "error: You must run this script as root!"
+        exit 1
+    fi
+}
+
 download_geoip() {
     if ! curl -L -H 'Cache-Control: no-cache' -o "${V2RAY}geoip.dat.new" "$DOWNLOAD_LINK_GEOIP"; then
         echo 'error: Download failed! Please check your network or try again.'
@@ -53,13 +61,14 @@ download_geosite() {
 
 rename_new() {
     for DAT in 'geoip' 'geosite'; do
-        install -m 755 "${V2RAY}$DAT.dat.new" "${V2RAY}$DAT.dat"
+        install -m 644 "${V2RAY}$DAT.dat.new" "${V2RAY}$DAT.dat"
         rm "${V2RAY}$DAT.dat.new"
         rm "${V2RAY}$DAT.dat.sha256sum.new"
     done
 }
 
 main() {
+    check_if_running_as_root
     download_geoip
     download_geosite
     rename_new
diff --git a/install-release.sh b/install-release.sh
index 8c75fad..496c4c5 100644
--- a/install-release.sh
+++ b/install-release.sh
@@ -12,6 +12,14 @@
 # If the script executes incorrectly, go to:
 # https://github.com/v2fly/fhs-install-v2ray/issues
 
+check_if_running_as_root() {
+    # If you want to run as another user, please modify $UID to be owned by this user
+    if [[ "$UID" -ne '0' ]]; then
+        echo "error: You must run this script as root!"
+        exit 1
+    fi
+}
+
 identify_the_operating_system_and_architecture() {
     if [[ "$(uname)" == 'Linux' ]]; then
         case "$(uname -m)" in
@@ -318,7 +326,7 @@ install_file() {
     if [[ "$NAME" == 'v2ray' ]] || [[ "$NAME" == 'v2ctl' ]]; then
         install -m 755 "${TMP_DIRECTORY}$NAME" "/usr/local/bin/$NAME"
     elif [[ "$NAME" == 'geoip.dat' ]] || [[ "$NAME" == 'geosite.dat' ]]; then
-        install -m 755 "${TMP_DIRECTORY}$NAME" "/usr/local/lib/v2ray/$NAME"
+        install -m 644 "${TMP_DIRECTORY}$NAME" "/usr/local/lib/v2ray/$NAME"
     fi
 }
 
@@ -362,8 +370,8 @@ install_startup_service_file() {
             echo 'error: Failed to start service file download! Please check your network or try again.'
             exit 1
         fi
-        install -m 755 "${TMP_DIRECTORY}systemd/system/v2ray.service" /etc/systemd/system/v2ray.service
-        install -m 755 "${TMP_DIRECTORY}systemd/system/v2ray@.service" /etc/systemd/system/v2ray@.service
+        install -m 644 "${TMP_DIRECTORY}systemd/system/v2ray.service" /etc/systemd/system/v2ray.service
+        install -m 644 "${TMP_DIRECTORY}systemd/system/v2ray@.service" /etc/systemd/system/v2ray@.service
         SYSTEMD='1'
     fi
 }
@@ -453,6 +461,7 @@ show_help() {
 }
 
 main() {
+    check_if_running_as_root
     identify_the_operating_system_and_architecture
     judgment_parameters "$@"