diff --git a/client/full/src/UDSClient.py b/client/full/src/UDSClient.py
index 9398a837..0b9efad7 100755
--- a/client/full/src/UDSClient.py
+++ b/client/full/src/UDSClient.py
@@ -49,7 +49,8 @@ import six
 
 from UDSWindow import Ui_MainWindow
 
-OLD_METHOD_VERSION = '2.1.0'
+# Server before this version uses "unsigned" scripts
+OLD_METHOD_VERSION = '2.4.0'
 
 class RetryException(Exception):
     pass