diff --git a/ports/stm32f4/Makefile b/ports/stm32f4/Makefile
index d948996ea4..1b5b2eee24 100755
--- a/ports/stm32f4/Makefile
+++ b/ports/stm32f4/Makefile
@@ -22,7 +22,7 @@
 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 # THE SOFTWARE.
-#DEBUG = 1
+DEBUG = 1
 
 # Select the board to build for.
 ifeq ($(BOARD),)
diff --git a/ports/stm32f4/boards/meowbit_v121/mpconfigboard.h b/ports/stm32f4/boards/meowbit_v121/mpconfigboard.h
index 7c7f4ad745..72d4f1c88e 100644
--- a/ports/stm32f4/boards/meowbit_v121/mpconfigboard.h
+++ b/ports/stm32f4/boards/meowbit_v121/mpconfigboard.h
@@ -40,7 +40,7 @@
 //#define BOARD_VTOR_DEFER //Leave VTOR relocation to bootloader
 
 // On-board flash
-// #define SPI_FLASH_MOSI_PIN          (&pin_PB15)
-// #define SPI_FLASH_MISO_PIN          (&pin_PB14)
-// #define SPI_FLASH_SCK_PIN           (&pin_PB13)
-// #define SPI_FLASH_CS_PIN            (&pin_PB01)
+#define SPI_FLASH_MOSI_PIN          (&pin_PB15)
+#define SPI_FLASH_MISO_PIN          (&pin_PB14)
+#define SPI_FLASH_SCK_PIN           (&pin_PB13)
+#define SPI_FLASH_CS_PIN            (&pin_PB01)
diff --git a/ports/stm32f4/boards/meowbit_v121/mpconfigboard.mk b/ports/stm32f4/boards/meowbit_v121/mpconfigboard.mk
index f24a2690cd..e45d2803f7 100644
--- a/ports/stm32f4/boards/meowbit_v121/mpconfigboard.mk
+++ b/ports/stm32f4/boards/meowbit_v121/mpconfigboard.mk
@@ -4,15 +4,15 @@ USB_PRODUCT = "Meowbit"
 USB_MANUFACTURER = "Kittenbot"
 USB_DEVICES = "CDC,MSC"
 
-# SPI_FLASH_FILESYSTEM = 1
-# EXTERNAL_FLASH_DEVICE_COUNT = 1
-# EXTERNAL_FLASH_DEVICES = W25Q16JV_IQ
-# LONGINT_IMPL = MPZ
+SPI_FLASH_FILESYSTEM = 1
+EXTERNAL_FLASH_DEVICE_COUNT = 1
+EXTERNAL_FLASH_DEVICES = W25Q16JV_IQ
+LONGINT_IMPL = MPZ
 
 # BOOTLOADER_OFFSET = 0x8010000
 
-INTERNAL_FLASH_FILESYSTEM = 1
-LONGINT_IMPL = NONE
+# INTERNAL_FLASH_FILESYSTEM = 1
+# LONGINT_IMPL = NONE
 
 MCU_SERIES = m4
 MCU_VARIANT = stm32f4
diff --git a/ports/stm32f4/boards/meowbit_v121/pins.c b/ports/stm32f4/boards/meowbit_v121/pins.c
index 66cbcd7d6f..0cdbefd59b 100644
--- a/ports/stm32f4/boards/meowbit_v121/pins.c
+++ b/ports/stm32f4/boards/meowbit_v121/pins.c
@@ -60,6 +60,6 @@ STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR_P0), MP_ROM_PTR(&pin_PA00) },
     { MP_ROM_QSTR(MP_QSTR_P3), MP_ROM_PTR(&pin_PB00) },
 
-    //{ MP_ROM_QSTR(MP_QSTR_INTERNAL_SPI), MP_ROM_PTR(&spi) },
+    { MP_ROM_QSTR(MP_QSTR_INTERNAL_SPI), MP_ROM_PTR(&spi) },
 };
 MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);