diff --git a/module/upgrade/config.php b/module/upgrade/config.php
index e4a3279710..0f094a5ece 100644
--- a/module/upgrade/config.php
+++ b/module/upgrade/config.php
@@ -48,5 +48,6 @@ $config->upgrade->discardedBugTypes['zh-tw']['designchange'] = '設計變更';
 $config->upgrade->discardedBugTypes['zh-tw']['newfeature']   = "新增需求";
 $config->upgrade->discardedBugTypes['zh-tw']['trackthings']  = '事務跟蹤';
 
-$config->delete['10.6'][] = 'module/chat/ext/control/extensions.php';
-$config->delete['10.6'][] = 'module/common/ext/model/xuanxuan.php';
+$config->delete['10.6'][]   = 'module/chat/ext/control/extensions.php';
+$config->delete['10.6'][]   = 'module/common/ext/model/xuanxuan.php';
+$config->delete['12.4.2'][] = 'www/js/ueditor';
diff --git a/module/upgrade/model.php b/module/upgrade/model.php
index 0743d048d3..3cbf97a3f3 100644
--- a/module/upgrade/model.php
+++ b/module/upgrade/model.php
@@ -911,16 +911,28 @@ class upgradeModel extends model
     public function deleteFiles()
     {
         $result = array();
+        $zfile  = $this->app->loadClass('zfile');
+
         foreach($this->config->delete as $deleteFiles)
         {
             $basePath = $this->app->getBasePath();
+
             foreach($deleteFiles as $file)
             {
                 if(isset($this->config->excludeFiles[$file])) continue;
+
                 $fullPath = $basePath . str_replace('/', DIRECTORY_SEPARATOR, $file);
-                if(file_exists($fullPath) and !unlink($fullPath)) $result[] = $fullPath;
+                if(file_exists($fullPath))
+                {
+                    if((is_dir($fullPath)  and !$zfile->removeDir($fullPath)) or
+                       (is_file($fullPath) and !$zfile->removeFile($fullPath)))
+                    {
+                        $result[] = $fullPath;
+                    }
+                }
             }
         }
+
         return $result;
     }