Index: firmware/App/Services/SystemComm.c
===================================================================
diff -u -r5addd92e279ebc0871364fee70e3ac74db21001a -re0af40e2557c9f9c4fd9f97e909b3cccdc2d15fe
--- firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision 5addd92e279ebc0871364fee70e3ac74db21001a)
+++ firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision e0af40e2557c9f9c4fd9f97e909b3cccdc2d15fe)
@@ -7,8 +7,8 @@
 *
 * @file    SystemComm.c
 *
-* @author  (last)      Sean Nash
-* @date    (last)      12-Nov-2021
+* @author  (last)      Dara Navaei
+* @date    (last)      07-Dec-2021
 *
 * @author  (original)  Dara Navaei
 * @date    (original)  05-Nov-2019
@@ -49,12 +49,13 @@
 #define MAX_COMM_CRC_FAILURE_WINDOW_MS  (10 * SEC_PER_MIN * MS_PER_SECOND)  ///< CRC error window
 
 #define MSG_NOT_ACKED_TIMEOUT_MS        150     ///< Maximum time for a Denali message that requires ACK to be ACK'd
+#define MSG_NOT_ACKED_TIMEOUT_MS_INIT   5000    ///< Maximum time for a Denali message that requires ACK to be ACK'd on the INIT state for the first (UI version request) message of the POST
 #define MSG_NOT_ACKED_MAX_RETRIES       3       ///< Maximum number of times a message that requires ACK that was not ACK'd can be re-sent before alarm
 #define PENDING_ACK_LIST_SIZE           25      ///< Maximum number of Denali messages that can be pending ACK at any given time
 
 #pragma pack(push, 1)
 
-/// Record for transmitted message that is pending acknowledgement from receiver.
+/// Record for transmitted message that is pending acknowledgment from receiver.
 typedef struct
 {
     BOOL used;
@@ -871,8 +872,13 @@
 
     // Find expired messages pending ACK
     for ( i = 0; i < PENDING_ACK_LIST_SIZE; i++ )
-    {   // Pending ACK expired?
-        if ( ( TRUE == pendingAckList[ i ].used ) && ( TRUE == didTimeout( pendingAckList[ i ].timeStamp, MSG_NOT_ACKED_TIMEOUT_MS ) ) )
+    {   // Pending ACK expired?
+        U32 timeoutPeriod = MSG_NOT_ACKED_TIMEOUT_MS; // set the timeout as default
+        if ( MODE_INIT == getCurrentOperationMode() )
+        { // change it to longer timeout if the HD is in INIT state
+            timeoutPeriod = MSG_NOT_ACKED_TIMEOUT_MS_INIT;
+        }
+        if ( ( TRUE == pendingAckList[ i ].used ) && ( TRUE == didTimeout( pendingAckList[ i ].timeStamp, timeoutPeriod ) ) )
         {   // If retries left, reset and resend pending message
             if ( pendingAckList[ i ].retries > 0 )
             {   // Re-queue message for transmit