diff --git a/Authentication Register Program/mainform.vb b/Authentication Register Program/mainform.vb
index b413643..c1aed5a 100644
--- a/Authentication Register Program/mainform.vb	
+++ b/Authentication Register Program/mainform.vb	
@@ -5,7 +5,7 @@ Imports MySql.Data.MySqlClient
 
 Public Class mainform
     Private Sub mainform_Load(sender As Object, e As EventArgs) Handles MyBase.Load
-        Me.Text = "DUALSONIC Authentication Register Program Ver 1.1.5"
+        Me.Text = "DUALSONIC Authentication Register Program Ver 1.1.6"
         lowProdListLoad()
     End Sub
 
diff --git a/Authentication Register Program/mySQLModule.vb b/Authentication Register Program/mySQLModule.vb
index eb4ae2b..13828f7 100644
--- a/Authentication Register Program/mySQLModule.vb	
+++ b/Authentication Register Program/mySQLModule.vb	
@@ -37,7 +37,7 @@ Module mySQLModule
     End Function
     Public Sub lowProdList(dic As Dictionary(Of String, String))
         Using Conn As MySqlConnection = GetDBConn()
-            Dim cmd As New MySqlCommand("SELECT 88_Code, ModelNum, ColorNum FROM jomtTesterDB.jomtProdList WHERE 88_Code IS NOT NULL", Conn)
+            Dim cmd As New MySqlCommand("SELECT distinct 88_Code, ModelNum, ColorNum FROM jomtTesterDB.jomtProdList WHERE 88_Code IS NOT NULL", Conn)
 
             Using reader As MySqlDataReader = cmd.ExecuteReader()
                 While reader.Read
@@ -53,7 +53,7 @@ Module mySQLModule
             Dim getSerialCmd As New MySqlCommand("SELECT Serial_Number,Order_Code FROM jomtOrderDB.jomtOrderTbl 
                                          WHERE Invoice_Number IS NOT NULL 
                                            AND Serial_Number IS NOT NULL                                                       
-                                           AND ((LEFT(Serial_Number,1) < '8' AND LENGTH(Serial_Number) > 11 ) OR Serial_Number in (SELECT 88_Code FROM jomtTesterDB.jomtProdList WHERE 88_Code IS NOT NULL))
+                                           AND ((LEFT(Serial_Number,1) < '8' AND LENGTH(Serial_Number) > 11 ) OR Serial_Number in (SELECT distinct 88_Code FROM jomtTesterDB.jomtProdList WHERE 88_Code IS NOT NULL))
                                            AND genuine_date is null
                                            AND Shipment_Date = @date", conn)
 
@@ -336,28 +336,29 @@ Module mySQLModule
                     orderParams.Add("@ord" & i)
                 Next
                 Dim orderInClause As String = String.Join(", ", orderParams)
-                Dim serialInClause As String
-                Dim queryOrder As String
-                If serialFilterList.Count > 0 Then
+                Dim serialInClause As String = ""
+                '' 조건 충족 시: Serial_Number IN으로 주문 테이블 업데이트
+                If serialFilterList.Count > 0 AndAlso productSnList.Count > 0 Then
                     Dim serialParams As New List(Of String)
                     For i As Integer = 0 To serialFilterList.Count - 1
                         serialParams.Add("@sno" & i)
                     Next
                     serialInClause = String.Join(", ", serialParams)
-                    queryOrder = "UPDATE jomtOrderDB.jomtOrderTbl SET genuine_date = NOW() WHERE Order_Code IN (" & orderInClause & ") AND ((LEFT(Serial_Number,1) < '8' AND LENGTH(Serial_Number) > 11) OR Serial_Number IN (" & serialInClause & "))"
-                Else
-                    queryOrder = "UPDATE jomtOrderDB.jomtOrderTbl SET genuine_date = NOW() WHERE Order_Code IN (" & orderInClause & ") AND (LEFT(Serial_Number,1) < '8' AND LENGTH(Serial_Number) > 11)"
+                    Dim queryBySerial As String = "UPDATE jomtOrderDB.jomtOrderTbl SET genuine_date = NOW() WHERE Serial_Number IN (" & serialInClause & ") and genuine_date is null"
+                    Using cmd As New MySqlCommand(queryBySerial, conn)
+                        For i As Integer = 0 To serialFilterList.Count - 1
+                            cmd.Parameters.AddWithValue("@sno" & i, serialFilterList(i))
+                        Next
+                        cmd.ExecuteNonQuery()
+                    End Using
                 End If
 
+                '' 공통: Order_Code IN + 시리얼 형식 조건으로 주문 테이블 업데이트
+                Dim queryOrder As String = "UPDATE jomtOrderDB.jomtOrderTbl SET genuine_date = NOW() WHERE Order_Code IN (" & orderInClause & ") AND (LEFT(Serial_Number,1) < '8' AND LENGTH(Serial_Number) > 11)"
                 Using cmd As New MySqlCommand(queryOrder, conn)
                     For i As Integer = 0 To orderList.Count - 1
                         cmd.Parameters.AddWithValue("@ord" & i, orderList(i))
                     Next
-                    If serialFilterList.Count > 0 Then
-                        For i As Integer = 0 To serialFilterList.Count - 1
-                            cmd.Parameters.AddWithValue("@sno" & i, serialFilterList(i))
-                        Next
-                    End If
                     cmd.ExecuteNonQuery()
                 End Using
             End Using