diff --git a/cap/zx297520v3/sources/meta-zxic-custom/recipes-lynq/lynq-fota-backup/files/lynq-fota-backup.cpp b/cap/zx297520v3/sources/meta-zxic-custom/recipes-lynq/lynq-fota-backup/files/lynq-fota-backup.cpp
index 23bb8e4..5fff5eb 100755
--- a/cap/zx297520v3/sources/meta-zxic-custom/recipes-lynq/lynq-fota-backup/files/lynq-fota-backup.cpp
+++ b/cap/zx297520v3/sources/meta-zxic-custom/recipes-lynq/lynq-fota-backup/files/lynq-fota-backup.cpp
@@ -32,6 +32,7 @@
 #define FOTA_SYNC_FLAG    1
 #define FOTA_CURRENT_SYS  "/mnt/userdata/.fota_current_sys"
 
+#define USER_LOG_TAG "LYNQ_FOTA_BACKUP"
 
 extern int lynq_sync_system();
 extern int lynq_fota_get_addr_value(char *tmp_value);
@@ -49,7 +50,7 @@
     fp = fopen(FOTA_REBOOT_FLAG,"w+");
     if(fp == NULL)
     {
-        printf("Open reboot flag file failed\n");
+        LYERRLOG("Open reboot flag file failed\n");
         return;
     }
     
@@ -70,33 +71,34 @@
     //not fota 
     if(access(FOTA_FLAG_FILE, F_OK) == -1)
     {
-        printf("Fota flag file no exist\n");
+        LYINFLOG("Fota flag file no exist\n");
 
         //file no exist,get current sys write to file
         if(access(FOTA_CURRENT_SYS,F_OK) == -1)
         {
-            printf("Record current sys file no exist\n");
+            LYINFLOG("Record current sys file no exist\n");
             
             fp = fopen(FOTA_CURRENT_SYS,"w");
             if(fp == NULL)
              {
-                printf("creat  record current file failed\n");
+                LYERRLOG("creat  record current file failed\n");
                 return -1;
             }
             current_sys = lynq_get_current_system();
             if(current_sys < 0)
             {
-                printf("Get current system failed %d\n",current_sys);
+                LYERRLOG("Get current system failed %d\n",current_sys);
                 fclose(fp);
                 return -1;
             }
             else
             {
                 
-                printf("Get current system success  %d\n",current_sys);
+                LYINFLOG("Get current system success  %d\n",current_sys);
                 fprintf(fp, "%d", current_sys);
-                system("sync");
                 fclose(fp);
+                system("sync");
+                
                 return 0;
             }
         }
@@ -105,16 +107,16 @@
             current_sys = lynq_get_current_system();
             if(current_sys < 0)
             {
-                printf("Get current system failed %d\n",current_sys);
+                LYERRLOG("Get current system failed %d\n",current_sys);
                 return -1;
             }
 
-            printf("Get current system success  %d\n",current_sys);
+            LYINFLOG("Get current system success  %d\n",current_sys);
             
             fp = fopen(FOTA_CURRENT_SYS,"r");
             if(fp == NULL)
             {
-                printf("read file failed \n");
+                LYERRLOG("read file failed \n");
                 return -1;
             }
         
@@ -124,37 +126,39 @@
             }
             else
             {
-                printf("tmp_sys is NULL");
+                LYERRLOG("tmp_sys is NULL");
                 fclose(fp);
                 return -1;
             }
             
             if( record_sys == current_sys)
             {
-                printf("System not need sync \n");
+                LYINFLOG("System not need sync \n");
                 fclose(fp);
                 return 0;
             }
             else 
             {
-                fp = fopen(FOTA_CURRENT_SYS,"w");
-                if(fp == NULL)
-                {
-                    printf("creat file failed  \n");
-                    return -1;
-                }
-                
-                printf("System need sync \n");
-                fprintf(fp,"%d",current_sys);
-                system("sync");
-                fclose(fp);
+                LYINFLOG("System need sync \n");
                 ret = lynq_sync_system();
                 if(ret < 0 )
                 {
-                    printf("A/B sync system failed \n");
+                    LYERRLOG("A/B sync system failed \n");
                     return -1;
                 }
-                printf("A/B sync system success \n");
+                LYINFLOG("A/B sync system success,record current sys \n");
+                fp = fopen(FOTA_CURRENT_SYS,"w");
+                if(fp == NULL)
+                {
+                    LYERRLOG("creat file failed  \n");
+                    return -1;
+                }
+                
+                fprintf(fp,"%d",current_sys);
+                fclose(fp);
+                system("sync");
+                
+                
                 return 0;
             }
         }
@@ -166,20 +170,20 @@
         fp = fopen(FOTA_CURRENT_SYS,"w");
         if(fp == NULL)
         {
-            printf("Creat file failed \n");
+            LYERRLOG("Creat file failed \n");
             return -1;
         }
-        printf("fota flag file exist,record current sys \n");
+        LYINFLOG("fota flag file exist,record current sys \n");
         current_sys = lynq_get_current_system();
         if(current_sys < 0)
         {
-            printf("Get current system failed %d\n",current_sys);
+            LYERRLOG("Get current system failed %d\n",current_sys);
             return -1;
         }
         
         fprintf(fp,"%d",current_sys);
-        system("sync");
         fclose(fp);
+        system("sync");
         return 0;
     }
            
@@ -198,7 +202,7 @@
     fp = fopen(FOTA_FLAG_FILE,"r");
     if(fp == NULL)
     {
-        printf("No need fota sync\n");
+        LYERRLOG("No need fota sync\n");
         return -1;
 
     }
@@ -213,7 +217,7 @@
         ret = lynq_sync_system();
         if(ret != 0)
         {
-            printf("sync faild\n");
+            LYERRLOG("sync faild\n");
         }
        system("rm -rf /mnt/userdata/.back_up_flag");
         
@@ -223,20 +227,20 @@
         ret = lynq_fota_get_addr_value(tmp_addr);
         if(ret != 0)
         {
-            printf("Get addr failed\n");
+            LYERRLOG("Get addr failed\n");
             return -1;
         }
-        printf("tmp_addr is %s\n",tmp_addr);
+        LYINFLOG("tmp_addr is %s\n",tmp_addr);
         ret = lynq_fota_set_addr_value(tmp_addr,10);
         if(ret != 0)
         {
-            printf("Set addr failed\n");
+            LYERRLOG("Set addr failed\n");
             return -1;
         }
         ret = lynq_fota_nrestart();
         if(ret != 0)
         {
-            printf("Upgrade failed\n");
+            LYERRLOG("Upgrade failed\n");
             return -1;
         }
         
@@ -245,6 +249,7 @@
     return 0;
 
 }
+DEFINE_LYNQ_LIB_LOG(LYNQ_FOTA_BACKUP)
 
 #ifdef __cplusplus
 }