diff --git a/openbeacon/lpc13xx/core/openbeacon/inc/msd.h b/openbeacon/lpc13xx/core/openbeacon/inc/msd.h
index 631d95f..a6102b0 100644
--- a/openbeacon/lpc13xx/core/openbeacon/inc/msd.h
+++ b/openbeacon/lpc13xx/core/openbeacon/inc/msd.h
@@ -26,7 +26,7 @@
 /***************************************************************
  * bytes per sector
  ***************************************************************/
-#define DISK_BLOCK_SIZE 512UL
+#define DISK_BLOCK_SIZE 0UL
 
 /***************************************************************
  * disk geometry - make it small enough
diff --git a/openbeacon/lpc13xx/openbeacon-usb2/Makefile b/openbeacon/lpc13xx/openbeacon-usb2/Makefile
index 689585f..8aea90c 100644
--- a/openbeacon/lpc13xx/openbeacon-usb2/Makefile
+++ b/openbeacon/lpc13xx/openbeacon-usb2/Makefile
@@ -13,7 +13,7 @@ APP_SRC= \
   src/nRF_API.c \
   src/pin.c \
   src/pmu.c \
-  src/storage.c
+#  src/storage.c
 
 APP_SRC+=$(IMAGES_C)
 
diff --git a/openbeacon/lpc13xx/openbeacon-usb2/inc/FreeRTOSConfig.h b/openbeacon/lpc13xx/openbeacon-usb2/inc/FreeRTOSConfig.h
index 68126cc..939af74 100644
--- a/openbeacon/lpc13xx/openbeacon-usb2/inc/FreeRTOSConfig.h
+++ b/openbeacon/lpc13xx/openbeacon-usb2/inc/FreeRTOSConfig.h
@@ -57,7 +57,7 @@
 #define configCPU_CLOCK_HZ				( ( unsigned long ) SystemCoreClock )
 #define configTICK_RATE_HZ				( ( portTickType ) 1000 )
 #define configMINIMAL_STACK_SIZE		( ( unsigned short ) 128 )
-#define configTOTAL_HEAP_SIZE			( ( size_t ) (  128 ) )
+#define configTOTAL_HEAP_SIZE			( ( size_t ) (  4096 ) )
 #define configMAX_TASK_NAME_LEN			( 12 )
 #define configUSE_TRACE_FACILITY		0
 #define configUSE_16_BIT_TICKS			0
diff --git a/openbeacon/lpc13xx/openbeacon-usb2/inc/config.h b/openbeacon/lpc13xx/openbeacon-usb2/inc/config.h
index 820edfc..65632ac 100644
--- a/openbeacon/lpc13xx/openbeacon-usb2/inc/config.h
+++ b/openbeacon/lpc13xx/openbeacon-usb2/inc/config.h
@@ -25,13 +25,13 @@
 #define __CONFIG_H__
 
 /* enable USB disk support */
-#define USB_DISK_SUPPORT
+//#define USB_DISK_SUPPORT
 #define USB_VENDOR_ID 0x2366
 #define USB_PROD_ID 0x0003
 #define USB_DEVICE 1
 
 /* SPI_CS(io_port, io_pin, CPSDVSR frequency, mode) */
-#define SPI_CS_FLASH SPI_CS( 2, 0, 24, SPI_CS_MODE_SKIP_TX ) /* 24.0MHz */
+//#define SPI_CS_FLASH SPI_CS( 2, 0, 24, SPI_CS_MODE_SKIP_TX ) /* 24.0MHz */
 #define SPI_CS_NRF   SPI_CS( 1,10, 24, SPI_CS_MODE_NORMAL  ) /*  9.6MHz */
 //#define SPI_CS_ACC3D SPI_CS( 0, 4, 6, SPI_CS_MODE_NORMAL  ) /*  8.0MHz */