diff --git a/app/gui/oven_control/define.h b/app/gui/oven_control/define.h
index 66b5486..ca2baad 100644
--- a/app/gui/oven_control/define.h
+++ b/app/gui/oven_control/define.h
@@ -5,11 +5,11 @@
 
 #define MAJOR_VER   1
 #define MINOR_VER   6
-#define HOTFIX_VER  11
+#define HOTFIX_VER  12
 
 // 0 for normal
 // 1 for premium
-#define MODEL_GRADE 1
+#define MODEL_GRADE 0
 
 #define ENABLE_WASH_RESUMING 0
 #define VALVE_HACCP_STAMP 1