Index: TDDefs.h
===================================================================
diff -u -r413aa187b32921babc077451fb7c98578707497b -r0c3614d99709d6ecbc213397bc7915c2aeb2d787
--- TDDefs.h	(.../TDDefs.h)	(revision 413aa187b32921babc077451fb7c98578707497b)
+++ TDDefs.h	(.../TDDefs.h)	(revision 0c3614d99709d6ecbc213397bc7915c2aeb2d787)
@@ -35,6 +35,7 @@
     MODE_PRET,                           ///< Pre-Treatment mode
     MODE_TREA,                           ///< Treatment mode
     MODE_POST,                           ///< Post-Treatment mode
+    MODE_UPDT,                           ///< Update mode
     MODE_NLEG,                           ///< Not legal - an illegal mode transition occurred
     NUM_OF_MODES                         ///< Number of TD operation modes
 };
@@ -112,6 +113,22 @@
 /**@}*/
 
 /**
+ *  @addtogroup TDUpdateMode
+ *  @{
+ */
+
+/// Sub-mode states while in update mode
+enum TD_Update_States
+{
+    UPDATE_INIT_STATE = 0,                                       ///< Start update state.
+    UPDATE_RESET_MCU_STATE,                                      ///< Reset MCU state.
+    NUM_OF_UPDATE_STATES                                         ///< Number of update states (sub-modes).
+};
+typedef enum TD_Update_States TD_UPDATE_STATE_T;                 ///< Type for TD update states enumeration
+
+/**@}*/
+
+/**
  *  @addtogroup TDPreTreatmentMode
  *  @{
  */