Index: firmware/App/HDCommon.h
===================================================================
diff -u -r4d42131878d3057a4af352c748cfcca814245871 -r1d8a5d4930bf57325cabfaa5a63b92b33f043448
--- firmware/App/HDCommon.h	(.../HDCommon.h)	(revision 4d42131878d3057a4af352c748cfcca814245871)
+++ firmware/App/HDCommon.h	(.../HDCommon.h)	(revision 1d8a5d4930bf57325cabfaa5a63b92b33f043448)
@@ -25,7 +25,7 @@
 #define HD_VERSION_MAJOR        0
 #define HD_VERSION_MINOR        6
 #define HD_VERSION_MICRO        0
-#define HD_VERSION_BUILD        520
+#define HD_VERSION_BUILD        521
 
 // ********** development build switches **********