diff --git a/app/spiffs/spiffs.c b/app/spiffs/spiffs.c
index f362580e..4795ae5a 100644
--- a/app/spiffs/spiffs.c
+++ b/app/spiffs/spiffs.c
@@ -45,7 +45,7 @@ The small 4KB sectors allow for greater flexibility in applications th
 void spiffs_mount() {
   spiffs_config cfg;
   cfg.phys_addr = ( u32_t )platform_flash_get_first_free_block_address( NULL ); 
-  cfg.phys_addr += 0x4000;
+  cfg.phys_addr += 0x3000;
   cfg.phys_addr &= 0xFFFFC000;  // align to 4 sector.
   cfg.phys_size = INTERNAL_FLASH_SIZE - ( ( u32_t )cfg.phys_addr - INTERNAL_FLASH_START_ADDRESS );
   cfg.phys_erase_block = INTERNAL_FLASH_SECTOR_SIZE; // according to datasheet
@@ -76,7 +76,7 @@ int myspiffs_format( void )
   SPIFFS_unmount(&fs);
   u32_t sect_first, sect_last;
   sect_first = ( u32_t )platform_flash_get_first_free_block_address( NULL ); 
-  sect_first += 0x4000;
+  sect_first += 0x3000;
   sect_first &= 0xFFFFC000;  // align to 4 sector.
   sect_first = platform_flash_get_sector_of_address(sect_first);
   sect_last = INTERNAL_FLASH_SIZE + INTERNAL_FLASH_START_ADDRESS - 4;
diff --git a/pre_build/latest/nodemcu_latest.bin b/pre_build/latest/nodemcu_latest.bin
index 16d57dfc..59def8c8 100644
Binary files a/pre_build/latest/nodemcu_latest.bin and b/pre_build/latest/nodemcu_latest.bin differ