diff --git a/APIServer.exe b/APIServer.exe
index cb919b5..37b4796 100644
Binary files a/APIServer.exe and b/APIServer.exe differ
diff --git a/ews/ews.go b/ews/ews.go
index 63c33d0..bb4a446 100644
--- a/ews/ews.go
+++ b/ews/ews.go
@@ -229,30 +229,6 @@ func (e *EWS) SetUutInfo(cfg cnf.Cfg, logger *log.Logger, host string, addr stri
 			return rst
 		}
 
-		// stmt, err = tx.Prepare("UPDATE uutinfo SET mac=?, ipaddr=?, relay=?, item=?, status=?, message=?, partno=?, mo=?, sku=?, line=?, stage=?, last_ack=NOW(), last_change=NOW() WHERE usn=?;")
-		// if err != nil {
-		// 	tx.Rollback()
-		// 	logger.Printf("[ERR]  %s; %s; %#v; %s\r\n", addr, uri, params, err.Error())
-		// 	rst["RESULT"] = "NG"
-		// 	rst["ErrMsg"] = err.Error()
-		// 	return rst
-		// }
-		// defer stmt.Close()
-		// _, err = stmt.Exec(
-		// 	params["MAC"],
-		// 	addr,
-		// 	host,
-		// 	params["ITEM"],
-		// 	params["STATUS"],
-		// 	params["MESSAGE"],
-		// 	params["PARTNO"],
-		// 	params["MO"],
-		// 	params["SKU"],
-		// 	params["LINE"],
-		// 	params["STAGE"],
-		// 	params["USN"],
-		// )
-
 		stmt, err = tx.Prepare("DELETE FROM uutinfo WHERE usn=?;")
 		if err != nil {
 			tx.Rollback()
@@ -320,16 +296,78 @@ func (e *EWS) SetUutInfo(cfg cnf.Cfg, logger *log.Logger, host string, addr stri
 		return rst
 	}
 
-	//如果此USN的记录存在与uutinfo表中, 且MAC/Item/Status/Message未变化, 则更新此USN记录的ipaddr,relay,stage, 并更新last_ack栏位为当前时间
-	dmlUpdate := fmt.Sprintf("UPDATE uutinfo SET ipaddr='%s', relay='%s', stage='%s', last_ack=NOW() WHERE usn='%s'",
-		addr, host, params["STAGE"], params["USN"])
-	_, err = dbo.Exec(dmlUpdate)
+	//如果此USN的记录存在与uutinfo表中, 且MAC/Item/Status/Message未变化, 则更新此USN记录的ipaddr,relay,line,stage, 并更新last_ack栏位为当前时间
+	//dmlUpdate := fmt.Sprintf("UPDATE uutinfo SET ipaddr='%s', relay='%s', line='%s', stage='%s', last_ack=NOW() WHERE usn='%s';",
+	//	addr, host, params["LINE"], params["STAGE"], params["USN"])
+	//2024-01-26: 使用事务模式先删除再插入此USN的记录, 避免直接使用UPDATE导致自增键seqid不更新
+
+	txu, err := dbo.Begin()
 	if err != nil {
 		logger.Printf("[ERR]  %s; %s; %#v; %s\r\n", addr, uri, params, err.Error())
 		rst["RESULT"] = "NG"
 		rst["ErrMsg"] = err.Error()
 		return rst
 	}
+
+	stmt, err := txu.Prepare("DELETE FROM uutinfo WHERE usn=?;")
+	if err != nil {
+		txu.Rollback()
+		logger.Printf("[ERR]  %s; %s; %#v; %s\r\n", addr, uri, params, err.Error())
+		rst["RESULT"] = "NG"
+		rst["ErrMsg"] = err.Error()
+		return rst
+	}
+	defer stmt.Close()
+	_, err = stmt.Exec(ui.USN)
+	if err != nil {
+		txu.Rollback()
+		logger.Printf("[ERR]  %s; %s; %#v; %s\r\n", addr, uri, params, err.Error())
+		rst["RESULT"] = "NG"
+		rst["ErrMsg"] = err.Error()
+		return rst
+	}
+
+	stmt, err = txu.Prepare("INSERT INTO uutinfo (usn,mac,ipaddr,relay,item,status,message,partno,mo,sku,line,stage,first_ack,last_ack,last_change) VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,NOW(),?);")
+	if err != nil {
+		txu.Rollback()
+		logger.Printf("[ERR]  %s; %s; %#v; %s\r\n", addr, uri, params, err.Error())
+		rst["RESULT"] = "NG"
+		rst["ErrMsg"] = err.Error()
+		return rst
+	}
+	_, err = stmt.Exec(
+		ui.USN,
+		ui.MAC,
+		addr,
+		host,
+		ui.Item,
+		ui.Status,
+		ui.Message,
+		ui.PartNO,
+		ui.MfgMO,
+		ui.MfgSKU,
+		params["LINE"],
+		params["STAGE"],
+		ui.FirstAck,
+		ui.LastChg,
+	)
+	if err != nil {
+		txu.Rollback()
+		logger.Printf("[ERR]  %s; %s; %#v; %s\r\n", addr, uri, params, err.Error())
+		rst["RESULT"] = "NG"
+		rst["ErrMsg"] = err.Error()
+		return rst
+	}
+
+	err = txu.Commit()
+	if err != nil {
+		txu.Rollback()
+		logger.Printf("[ERR]  %s; %s; %#v; %s\r\n", addr, uri, params, err.Error())
+		rst["RESULT"] = "NG"
+		rst["ErrMsg"] = err.Error()
+		return rst
+	}
+
 	rst["RESULT"] = "OK"
 	rst["ErrMsg"] = "Updated 1 record."
 	return rst