+ err1 = file_fat_read(CONFIG_ENV_FAT_FILE, buf1, CONFIG_ENV_SIZE);
+#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
+ err2 = file_fat_read(CONFIG_ENV_FAT_FILE_REDUND, buf2, CONFIG_ENV_SIZE);
+
+ err1 = (err1 >= 0) ? 0 : -1;
+ err2 = (err2 >= 0) ? 0 : -1;
+ return env_import_redund(buf1, err1, buf2, err2, H_EXTERNAL);
+#else
+ if (err1 < 0) {