[bt_6709]change sw version 1.1 -> 1.2

config/common_config.h

@@ -41,7 +41,7 @@
 #elif HARDWARE_BT6703
 #define VERSION                         "1.0"
 #elif HARDWARE_BT6709
-#define VERSION                         "1.1"
+#define VERSION                         "1.2"
 #endif
 
 /**