diff --git a/Ubiquitous/XiZi_IIoT/board/xidatong-arm32/third_party_driver/common/Makefile b/Ubiquitous/XiZi_IIoT/board/xidatong-arm32/third_party_driver/common/Makefile
index e27bfd216..7f0219b14 100755
--- a/Ubiquitous/XiZi_IIoT/board/xidatong-arm32/third_party_driver/common/Makefile
+++ b/Ubiquitous/XiZi_IIoT/board/xidatong-arm32/third_party_driver/common/Makefile
@@ -5,10 +5,7 @@ ifeq ($(CONFIG_BSP_USING_SDIO),y)
 endif
 
 ifeq ($(CONFIG_BSP_USING_OTA),y)
-  SRC_FILES += fsl_romapi.c flash.c mcuboot.c
-  ifeq ($(CONFIG_MCUBOOT_BOOTLOADER),y)
-    SRC_FILES += common.c ymodem.c
-  endif
+  SRC_FILES += fsl_romapi.c flash.c mcuboot.c common.c ymodem.c
 endif
 
 include $(KERNEL_ROOT)/compiler.mk
diff --git a/Ubiquitous/XiZi_IIoT/board/xidatong-arm32/third_party_driver/common/mcuboot.c b/Ubiquitous/XiZi_IIoT/board/xidatong-arm32/third_party_driver/common/mcuboot.c
index 617781a53..e978fd304 100644
--- a/Ubiquitous/XiZi_IIoT/board/xidatong-arm32/third_party_driver/common/mcuboot.c
+++ b/Ubiquitous/XiZi_IIoT/board/xidatong-arm32/third_party_driver/common/mcuboot.c
@@ -51,7 +51,7 @@ static void UartConfig(void)
 
 static void jump_to_application(void)
 {
-    SCB->VTOR = (uint32_t)0x60100000;
+    SCB->VTOR = (uint32_t)XIUOS_FLAH_ADDRESS;
 
     asm volatile("LDR   R0, = 0x60100000");
     asm volatile("LDR   R0, [R0]");
@@ -101,7 +101,7 @@ void BootLoaderJumpApp(void)
                     break;
                 case 0x32:
                     FLASH_Init();
-                    SerialDownload();
+                    SerialDownload(XIUOS_FLAH_ADDRESS);
                     FLASH_DeInit();
                     break;
                 case 0x33:
diff --git a/Ubiquitous/XiZi_IIoT/board/xidatong-arm32/third_party_driver/common/ymodem.c b/Ubiquitous/XiZi_IIoT/board/xidatong-arm32/third_party_driver/common/ymodem.c
index fff3ef2be..f8eb0a907 100644
--- a/Ubiquitous/XiZi_IIoT/board/xidatong-arm32/third_party_driver/common/ymodem.c
+++ b/Ubiquitous/XiZi_IIoT/board/xidatong-arm32/third_party_driver/common/ymodem.c
@@ -19,13 +19,11 @@
 * @date:    2023/3/24
 */
 
-
 #include "common.h"
 #include "ymodem.h"
 #include "string.h"
 #include "flash.h"
 
-#define BL_APP_VECTOR_TABLE_ADDRESS  0x60100000
 
 uint8_t tab_1024[1024] ={0};
 uint8_t FileName[FILE_NAME_LENGTH];
@@ -208,17 +206,17 @@ static int32_t Receive_Packet (uint8_t *data, int32_t *length, uint32_t timeout)
 
 /**
   * @brief  Receive a file using the ymodem protocol
-  * @param  buf: Address of the first byte
+  * @param  buf: Address of the first byte,addr:download flash start address
   * @retval The size of the file
   */
-int32_t Ymodem_Receive (uint8_t *buf)
+int32_t Ymodem_Receive (uint8_t *buf, const uint32_t addr)
 {
   uint8_t packet_data[PACKET_1K_SIZE + PACKET_OVERHEAD], file_size[FILE_SIZE_LENGTH], *file_ptr, *buf_ptr;
   int32_t i, packet_length, session_done, file_done, packets_received, errors, session_begin, size = 0;
   uint32_t flashdestination;
 
   /* Initialize flashdestination variable */
-  flashdestination = BL_APP_VECTOR_TABLE_ADDRESS;
+  flashdestination = addr;
   
   for (session_done = 0, errors = 0, session_begin = 0; ;)
   {
@@ -276,7 +274,7 @@ int32_t Ymodem_Receive (uint8_t *buf)
                     }
                     /* erase user application area */
 
-                    NOR_FLASH_Erase(BL_APP_VECTOR_TABLE_ADDRESS,size);
+                    NOR_FLASH_Erase(addr,size);
                     Send_Byte(ACK);
                     Send_Byte(CRC16);
                   }
@@ -352,16 +350,16 @@ int32_t Ymodem_Receive (uint8_t *buf)
 
 /**
   * @brief  Download a file via serial port
-  * @param  None
+  * @param  flash start addr
   * @retval None
   */
-void SerialDownload(void)
+void SerialDownload(const uint32_t addr)
 {
   uint8_t Number[10] = {0};
   int32_t Size = 0;
 
   Serial_PutString("Waiting for the file to be sent ... (press 'a' to abort)\n\r");
-  Size = Ymodem_Receive(&tab_1024[0]);
+  Size = Ymodem_Receive(&tab_1024[0], addr);
   if (Size > 0)
   {		
     Serial_PutString("\n\n\r Programming Completed Successfully!\n\r--------------------------------\r\n Name: ");
diff --git a/Ubiquitous/XiZi_IIoT/board/xidatong-arm32/third_party_driver/include/flash.h b/Ubiquitous/XiZi_IIoT/board/xidatong-arm32/third_party_driver/include/flash.h
index a332ca55b..fd86d003d 100644
--- a/Ubiquitous/XiZi_IIoT/board/xidatong-arm32/third_party_driver/include/flash.h
+++ b/Ubiquitous/XiZi_IIoT/board/xidatong-arm32/third_party_driver/include/flash.h
@@ -30,6 +30,11 @@
 #define FREQ_1MHz (1000000UL)
 #define FLEXSPI_DLLCR_DEFAULT (0x100UL)
 
+#define XIUOS_FLAH_ADDRESS  0x60100000
+#define BAKUP_FLAH_ADDRESS  0x60300000
+#define DOWN_FLAH_ADDRESS   0x60500000
+#define FLAG_FLAH_ADDRESS   0x60700000
+
 enum
 {
     kFlexSpiDelayCellUnit_Min = 75,  // 75ps
diff --git a/Ubiquitous/XiZi_IIoT/board/xidatong-arm32/third_party_driver/include/ymodem.h b/Ubiquitous/XiZi_IIoT/board/xidatong-arm32/third_party_driver/include/ymodem.h
index c2eac308c..08ff4fd1a 100644
--- a/Ubiquitous/XiZi_IIoT/board/xidatong-arm32/third_party_driver/include/ymodem.h
+++ b/Ubiquitous/XiZi_IIoT/board/xidatong-arm32/third_party_driver/include/ymodem.h
@@ -24,7 +24,6 @@
 
 #include <stdint.h>
 
-#define BL_APP_VECTOR_TABLE_ADDRESS  0x60100000   //Application start address
 #define USER_FLASH_SIZE              0x100000     //Application package size is limited to 1M
 #define PACKET_SEQNO_INDEX      (1)
 #define PACKET_SEQNO_COMP_INDEX (2)
@@ -52,7 +51,7 @@
 #define NAK_TIMEOUT             (0x100000)
 #define MAX_ERRORS              (5)
 
-void SerialDownload(void);
-int32_t Ymodem_Receive (uint8_t *);
+void SerialDownload(const uint32_t addr);
+int32_t Ymodem_Receive (uint8_t *buf, const uint32_t addr);
 
 #endif