diff --git a/cattools.sh b/cattools.sh
index 6c31f2d..e4089de 100644
--- a/cattools.sh
+++ b/cattools.sh
@@ -19,22 +19,6 @@ if ! grep -q "OpenWrt" <<< "$openwrt_release"; then
     exit 1
 fi
 
-# installed
-install_cattools() {
-    if [ ! -f /usr/bin/cattools ]; then
-        echo "cattools not found, installing..."
-        if curl --silent --connect-timeout 5 -o /usr/bin/cattools https://raw.githubusercontent.com/miaoermua/cattools/main/cattools.sh; then
-            echo "cattools installed successfully from the first URL."
-        elif curl --silent --connect-timeout 5 -o /usr/bin/cattools https://fastly.jsdelivr.net/gh/miaoermua/cattools@main/cattools.sh; then
-            echo "cattools installed successfully from the second URL."
-        else
-            echo "Failed to download cattools from both URLs."
-            exit 1
-        fi
-        chmod +x /usr/bin/cattools
-    fi
-}
-
 # Update
 update_cattools() {
     local temp_file=$(mktemp)
@@ -52,7 +36,6 @@ update_cattools() {
     echo "cattools updated successfully."
 }
 
-install_cattools
 update_cattools
 
 # Menu Function