diff --git a/lib/Alchemy/Phrasea/Core/Configuration.php b/lib/Alchemy/Phrasea/Core/Configuration.php
index 70d8bba84e..3ba2277570 100644
--- a/lib/Alchemy/Phrasea/Core/Configuration.php
+++ b/lib/Alchemy/Phrasea/Core/Configuration.php
@@ -82,8 +82,6 @@ class Configuration
   {
     $this->initialize();
 
-    $cacheService = "Cache\array_cache";
-
     $retrieve_old_credentials = function(\SplFileObject $connexionInc)
       {
         require $connexionInc->getPathname();
@@ -131,29 +129,10 @@ class Configuration
       }
 
       $configs[$env]['phraseanet']['servername'] = $old_parameters['servername'];
-
-      if ($env === 'prod' && isset($configs[$env]['cache']))
-      {
-        $configs[$env]["cache"] = $cacheService;
-      }
-      if ($env === 'prod' && isset($configs[$env]['opcodecache']))
-      {
-        $configs[$env]["opcodecache"] = $cacheService;
-      }
     }
+    
     $this->setConfigurations($configs);
 
-    $services = $this->getServices();
-
-    if (isset($services['Orm']["doctrine_prod"]["options"]["cache"]))
-    {
-      $services['Orm']["doctrine_prod"]["options"]["cache"]['query']['service']    = $cacheService;
-      $services['Orm']["doctrine_prod"]["options"]["cache"]['result']['service']   = $cacheService;
-      $services['Orm']["doctrine_prod"]["options"]["cache"]['metadata']['service'] = $cacheService;
-    }
-
-    $this->setServices($services);
-
     $this->setEnvironnement('prod');
 
     return $this;
diff --git a/lib/classes/patch/3602.class.php b/lib/classes/patch/3602.class.php
index 43b3be5780..f198b3590d 100644
--- a/lib/classes/patch/3602.class.php
+++ b/lib/classes/patch/3602.class.php
@@ -22,7 +22,7 @@ class patch_3602 implements patchInterface
    *
    * @var string
    */
-  private $release = '3.6.0a2';
+  private $release = '3.6.0a1';
   /**
    *
    * @var Array
@@ -40,7 +40,7 @@ class patch_3602 implements patchInterface
 
   public function require_all_upgrades()
   {
-    return true;
+    return false;
   }
 
   /**