diff --git a/Ubiquitous/XiZi_IIoT/board/xidatong-arm32/board.c b/Ubiquitous/XiZi_IIoT/board/xidatong-arm32/board.c
index 4c2dc16a9..614c8264c 100644
--- a/Ubiquitous/XiZi_IIoT/board/xidatong-arm32/board.c
+++ b/Ubiquitous/XiZi_IIoT/board/xidatong-arm32/board.c
@@ -414,8 +414,7 @@ void InitBoardHardware()
     KPrintf("start kernel...\n");
 
 #ifdef TOOL_USING_OTA
-    FLASH_Init();
-    //跳转成功将对应跳转失败标志设置
-    FLASH_DeInit();
+    //跳转成功设置lastjumpflag为JUMP_SUCCESS_FLAG
+    app_clear_jumpflag();
 #endif
 }
diff --git a/Ubiquitous/XiZi_IIoT/tool/bootloader/ota/ota.c b/Ubiquitous/XiZi_IIoT/tool/bootloader/ota/ota.c
index e4b5956ce..4e0416e19 100644
--- a/Ubiquitous/XiZi_IIoT/tool/bootloader/ota/ota.c
+++ b/Ubiquitous/XiZi_IIoT/tool/bootloader/ota/ota.c
@@ -123,7 +123,7 @@ static void UpdateApplication(void)
     ota_info_t ota_info;  // 定义OTA信息结构体
 
     // 从Flash中读取OTA信息
-    memcpy(&ota_info, (const void *)FLAG_FLAH_ADDRESS,sizeof(ota_info_t));
+    mcuboot.op_flash_read(FLAG_FLAH_ADDRESS, (void*)&ota_info, sizeof(ota_info_t));
 
     // 如果OTA升级状态为准备状态，且APP分区与download分区版本不同,才可以进行升级
     if((ota_info.status == OTA_STATUS_READY) && (ota_info.os.crc32 != ota_info.down.crc32)) 
@@ -233,7 +233,7 @@ static void BackupVersion(void)
 {
     status_t status;
     ota_info_t ota_info;
-    memcpy(&ota_info, (const void *)FLAG_FLAH_ADDRESS,sizeof(ota_info_t));
+    mcuboot.op_flash_read(FLAG_FLAH_ADDRESS, (void*)&ota_info, sizeof(ota_info_t));
 
     ota_info.status = OTA_STATUS_BACKUP;
     UpdateOTAFlag(&ota_info);
@@ -267,13 +267,12 @@ static void BootLoaderJumpApp(void)
 {
     ota_info_t ota_info;
     mcuboot.flash_init();
-    memcpy(&ota_info, (const void *)FLAG_FLAH_ADDRESS,sizeof(ota_info_t));
+    mcuboot.op_flash_read(FLAG_FLAH_ADDRESS, (void*)&ota_info, sizeof(ota_info_t));
 
     if(ota_info.lastjumpflag == JUMP_FAILED_FLAG)
     {
         mcuboot.print_string("\r\n------Bootloader false, begin backup!------\r\n");
-        BackupVersion();
-        
+        BackupVersion();   
     }
     else
     {
@@ -320,7 +319,7 @@ static void app_ota(void)
     mcuboot.flash_init();
     mcuboot.serial_init();
 
-    memcpy(&ota_info, (const void *)FLAG_FLAH_ADDRESS,sizeof(ota_info_t));
+    mcuboot.op_flash_read(FLAG_FLAH_ADDRESS, (void*)&ota_info, sizeof(ota_info_t));
     ota_info.status = OTA_STATUS_DOWNLOADING;
     UpdateOTAFlag(&ota_info);
     size = mcuboot.download_by_serial(DOWN_FLAH_ADDRESS);
@@ -359,7 +358,7 @@ void app_clear_jumpflag(void)
     mcuboot.flash_init();
     //跳转成功设置lastjumpflag为JUMP_SUCCESS_FLAG
     ota_info_t ota_info;
-    memcpy(&ota_info, (const void *)FLAG_FLAH_ADDRESS,sizeof(ota_info_t));
+    mcuboot.op_flash_read(FLAG_FLAH_ADDRESS, (void*)&ota_info, sizeof(ota_info_t));
     ota_info.lastjumpflag = JUMP_SUCCESS_FLAG;
     UpdateOTAFlag(&ota_info);
     mcuboot.flash_deinit();
@@ -407,12 +406,12 @@ void ota_entry(void)
             switch(ch2)
             {
                 case 0x31:   
-                    mcuboot.op_jump();
+                    BootLoaderJumpApp();
                     break;
 
                 case 0x32:
                     mcuboot.flash_init();
-                    memcpy(&ota_info, (const void *)FLAG_FLAH_ADDRESS,sizeof(ota_info_t));
+                    mcuboot.op_flash_read(FLAG_FLAH_ADDRESS, (void*)&ota_info, sizeof(ota_info_t));
                     /* 此时APP分区还没有有效的固件,需要在bootloader下通过iap烧写出厂固件 */
                     if((ota_info.os.size > APP_FLASH_SIZE) || (calculate_crc32(XIUOS_FLAH_ADDRESS, ota_info.os.size) != ota_info.os.crc32))
                     {
@@ -425,7 +424,7 @@ void ota_entry(void)
                     }
                    
                     mcuboot.flash_deinit();
-                    mcuboot.op_jump();
+                    BootLoaderJumpApp();
                     break;
 
                 case 0x33:
@@ -436,7 +435,7 @@ void ota_entry(void)
         }
         else
         {
-            mcuboot.op_jump();
+            BootLoaderJumpApp();
         } 
     }
 }