Index: firmware/App/FPCommon.h
===================================================================
diff -u -re5b0e2aedae6e58251b8a028c7fabd947c53abaa -r8940f67c485a23e20e14e4dc24e79339f80cc584
--- firmware/App/FPCommon.h	(.../FPCommon.h)	(revision e5b0e2aedae6e58251b8a028c7fabd947c53abaa)
+++ firmware/App/FPCommon.h	(.../FPCommon.h)	(revision 8940f67c485a23e20e14e4dc24e79339f80cc584)
@@ -1,15 +1,15 @@
 
-#ifndef __RO_COMMON_H__
-#define __RO_COMMON_H__
+#ifndef __FP_COMMON_H__
+#define __FP_COMMON_H__
 
 #include "hal_stdtypes.h"
 
 // ********** version **********
 
-#define RO_VERSION_MAJOR    0
-#define RO_VERSION_MINOR    0
-#define RO_VERSION_MICRO    0
-#define RO_VERSION_BUILD    3
+#define FP_VERSION_MAJOR    0
+#define FP_VERSION_MINOR    0
+#define FP_VERSION_MICRO    0
+#define FP_VERSION_BUILD    3
 
 // ********** development build switches **********
 
@@ -33,20 +33,30 @@
 
 #pragma pack(push,1)
 
-/// Payload record structure for an RO versions message.
+/// Payload record structure for an FP versions message.
 typedef struct
 {
-    U08 major;                              ///< RO version major revision.
-    U08 minor;                              ///< RO version minor revision.
-    U08 micro;                              ///< RO version micro revision.
-    U16 build;                              ///< RO build version.
-    U08 fpgaId;                             ///< RO FPGA ID.
-    U08 fpgaMajor;                          ///< RO FPGA major revision.
-    U08 fpgaMinor;                          ///< RO FPGA minor revision.
-    U08 fpgaLab;                            ///< RO FPGA lab revision.
-    U32 compatibilityRev;                   ///< RO compatibility revision.
-} RO_VERSIONS_T;
+    U08 major;                              ///< FP version major revision.
+    U08 minor;                              ///< FP version minor revision.
+    U08 micro;                              ///< FP version micro revision.
+    U16 build;                              ///< FP build version.
+    U08 fpgaId;                             ///< FP FPGA ID.
+    U08 fpgaMajor;                          ///< FP FPGA major revision.
+    U08 fpgaMinor;                          ///< FP FPGA minor revision.
+    U08 fpgaLab;                            ///< FP FPGA lab revision.
+    U32 compatibilityRev;                   ///< FP compatibility revision.
+} FP_VERSIONS_T;
 
+/// Record defining the fields in a UI version request message.
+typedef struct
+{
+    U08 major;                              ///< Major version for UI software.
+    U08 minor;                              ///< Minor version for UI software.
+    U08 micro;                              ///< Micro version for UI software.
+    U16 build;                              ///< Build number for UI software.
+    U32 compatibility;                      ///< Compatibility revision.
+} UI_VERSIONS_T;
+
 #pragma pack(pop)
 
 // **** Common Macros ****