diff --git a/ptb9.json b/ptb9.json
index ec400bd..2a4886e 100644
--- a/ptb9.json
+++ b/ptb9.json
@@ -44,10 +44,11 @@
         },
         {
           "type": "urukul",
-          "hw_rev": "v1.5",
+          "hw_rev": "v1.4",
+          "variant": "AD9912",
           "ports": [4],
-          "clk_sel": 2,
-          "synchronization": true
+          "dds": "ad9912",
+          "clk_sel": 2
         },
         {
           "type": "zotino",