diff --git a/README.md b/README.md
index 295ff8e..2ad42d6 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# Alight Admin
+# Alight-Admin
 Alight Admin is a quick admin panel extension based on the  [Alight framework](https://github.com/juneszh/alight).
 
 ![desktop screenshot](example/image/screenshot_1.png)
@@ -11,15 +11,26 @@ Alight Admin is a quick admin panel extension based on the  [Alight framework](h
 * Includes **authorization**, **permissions** and **user management**.
 * Customizable **Charts** displayed in the console by PHP, such as **Line**, **Column**, **Pie**, etc.
 
+## Alight Family
+
+| Project     | Description     |
+| --- | --- |
+| [Alight](https://github.com/juneszh/alight)  | Basic framework built-in routing, database, caching, etc. |
+| [Alight-Admin](https://github.com/juneszh/alight-admin)  | A full admin panel extension based on Alight. No front-end coding required.|
+| [Alight-Project](https://github.com/juneszh/alight-project) | A template for beginner to easily create web applications by Alight/Alight-Admin. |
+
+## Requirements
+PHP 7.4+
+
 ## Usage
-Alight Admin can be quickly built using [Alight Project](https://github.com/juneszh/alight-project).
+Alight Admin can be quickly built using [Alight-Project](https://github.com/juneszh/alight-project).
 ### Creating Project
 ```bash
 $ composer create-project juneszh/alight-project {PROJECT_DIRECTORY} 
 ```
 
 ### Initialize Admin
-The following commands will build the runtime environment required by **Alight Admin**, such as installing composer package, inserting configuration options, creating database tables, and downloading front-end resources. Please make sure the [database has been configured](https://github.com/juneszh/alight#database).
+The following commands will build the runtime environment required by **Alight-Admin**, such as installing composer package, inserting configuration options, creating database tables, and downloading front-end resources. Please make sure the [database has been configured](https://github.com/juneszh/alight#database).
 ```bash
 $ cd {PROJECT_DIRECTORY} 
 $ composer require juneszh/alight-admin
diff --git a/composer.json b/composer.json
index 597470a..36de858 100644
--- a/composer.json
+++ b/composer.json
@@ -28,7 +28,8 @@
         }
     },
     "require": {
-        "juneszh/alight": "^1.1.0",
+        "php": ">=7.4",
+        "juneszh/alight": "^1.1",
         "gregwar/captcha": "^1.1",
         "symfony/var-exporter": ">=5.4"
     }
diff --git a/src/Admin.php b/src/Admin.php
index d1fc087..c101494 100644
--- a/src/Admin.php
+++ b/src/Admin.php
@@ -106,7 +106,7 @@ public static function globalScript(string $component, array $config = [])
     public static function install()
     {
         if (PHP_SAPI !== 'cli') {
-            throw new Exception('Php-cli mode required.');
+            throw new Exception('PHP-CLI required.');
         }
 
         $configFile = realpath('config/app.php');
@@ -376,12 +376,11 @@ private static function createTable()
     public static function download()
     {
         if (PHP_SAPI !== 'cli') {
-            throw new Exception('Php-cli mode required.');
+            throw new Exception('PHP-CLI required.');
         }
 
         $package = 'juneszh/alight-admin';
         $version = InstalledVersions::getPrettyVersion($package);
-        echo $version . PHP_EOL;
 
         if ($version[0] !== 'v') {
             echo 'Unable to download about version: ', $version, PHP_EOL;
@@ -398,7 +397,9 @@ public static function download()
                 exec('rm -rf ' . $dir . '/*');
             }
 
-            if (copy($url, $file)) {
+            exec('wget -O ' . $file . ' ' . $url);
+
+            if (file_exists($file)) {
                 $phar = new PharData($file);
                 $phar->decompress();
                 $phar->extractTo($dir);