diff --git a/configs/spresense/lcd/defconfig b/configs/spresense/lcd/defconfig
index 085629160a..098c329a5b 100644
--- a/configs/spresense/lcd/defconfig
+++ b/configs/spresense/lcd/defconfig
@@ -8,6 +8,7 @@
 # CONFIG_CXD56_I2C0_SCUSEQ is not set
 # CONFIG_MMCSD_HAVE_WRITEPROTECT is not set
 # CONFIG_MMCSD_SPI is not set
+# CONFIG_MTD_SMART_WEAR_LEVEL is not set
 # CONFIG_STANDARD_SERIAL is not set
 CONFIG_ARCH="arm"
 CONFIG_ARCH_BOARD="spresense"
@@ -44,6 +45,7 @@ CONFIG_FAT_MAXFNAME=64
 CONFIG_FS_FAT=y
 CONFIG_FS_PROCFS=y
 CONFIG_FS_PROCFS_REGISTER=y
+CONFIG_FS_SMARTFS=y
 CONFIG_HAVE_CXX=y
 CONFIG_HAVE_CXXINITIALIZE=y
 CONFIG_I2C=y
@@ -54,6 +56,11 @@ CONFIG_MAX_TASKS=16
 CONFIG_MAX_WDOGPARMS=2
 CONFIG_MMCSD=y
 CONFIG_MMCSD_SDIO=y
+CONFIG_MTD_BYTE_WRITE=y
+CONFIG_MTD_PARTITION=y
+CONFIG_MTD_SMART=y
+CONFIG_MTD_SMART_ENABLE_CRC=y
+CONFIG_MTD_SMART_SECTOR_SIZE=4096
 CONFIG_NFILE_DESCRIPTORS=8
 CONFIG_NFILE_STREAMS=8
 CONFIG_NSH_ARCHINIT=y
@@ -70,6 +77,9 @@ CONFIG_RTC=y
 CONFIG_RTC_DRIVER=y
 CONFIG_SCHED_WAITPID=y
 CONFIG_SDCLONE_DISABLE=y
+CONFIG_SMARTFS_ALIGNED_ACCESS=y
+CONFIG_SMARTFS_MAXNAMLEN=30
+CONFIG_SMARTFS_MULTI_ROOT_DIRS=y
 CONFIG_SPI=y
 CONFIG_START_DAY=6
 CONFIG_START_MONTH=12
@@ -88,4 +98,4 @@ CONFIG_USBDEV_DUALSPEED=y
 CONFIG_USBMSC=y
 CONFIG_USBMSC_COMPOSITE=y
 CONFIG_USBMSC_REMOVABLE=y
-CONFIG_USER_ENTRYPOINT="nsh_main"
+CONFIG_USER_ENTRYPOINT="spresense_main"
diff --git a/configs/spresense/mpy/defconfig b/configs/spresense/mpy/defconfig
index 3b43d45356..907f138f17 100644
--- a/configs/spresense/mpy/defconfig
+++ b/configs/spresense/mpy/defconfig
@@ -8,6 +8,7 @@
 # CONFIG_CXD56_I2C0_SCUSEQ is not set
 # CONFIG_MMCSD_HAVE_WRITEPROTECT is not set
 # CONFIG_MMCSD_SPI is not set
+# CONFIG_MTD_SMART_WEAR_LEVEL is not set
 # CONFIG_STANDARD_SERIAL is not set
 CONFIG_ARCH="arm"
 CONFIG_ARCH_BOARD="spresense"
@@ -47,6 +48,7 @@ CONFIG_FAT_MAXFNAME=64
 CONFIG_FS_FAT=y
 CONFIG_FS_PROCFS=y
 CONFIG_FS_PROCFS_REGISTER=y
+CONFIG_FS_SMARTFS=y
 CONFIG_HAVE_CXX=y
 CONFIG_HAVE_CXXINITIALIZE=y
 CONFIG_I2C=y
@@ -54,6 +56,11 @@ CONFIG_MAX_TASKS=16
 CONFIG_MAX_WDOGPARMS=2
 CONFIG_MMCSD=y
 CONFIG_MMCSD_SDIO=y
+CONFIG_MTD_BYTE_WRITE=y
+CONFIG_MTD_PARTITION=y
+CONFIG_MTD_SMART=y
+CONFIG_MTD_SMART_ENABLE_CRC=y
+CONFIG_MTD_SMART_SECTOR_SIZE=4096
 CONFIG_NFILE_DESCRIPTORS=8
 CONFIG_NFILE_STREAMS=8
 CONFIG_NSH_ARCHINIT=y
@@ -70,6 +77,9 @@ CONFIG_RTC=y
 CONFIG_RTC_DRIVER=y
 CONFIG_SCHED_WAITPID=y
 CONFIG_SDCLONE_DISABLE=y
+CONFIG_SMARTFS_ALIGNED_ACCESS=y
+CONFIG_SMARTFS_MAXNAMLEN=30
+CONFIG_SMARTFS_MULTI_ROOT_DIRS=y
 CONFIG_SPI=y
 CONFIG_START_DAY=6
 CONFIG_START_MONTH=12
@@ -85,4 +95,4 @@ CONFIG_USBDEV_DUALSPEED=y
 CONFIG_USBMSC=y
 CONFIG_USBMSC_EPBULKIN=1
 CONFIG_USBMSC_REMOVABLE=y
-CONFIG_USER_ENTRYPOINT="nsh_main"
+CONFIG_USER_ENTRYPOINT="spresense_main"
diff --git a/configs/spresense/nsh/defconfig b/configs/spresense/nsh/defconfig
index 00d1a5fa3d..817108b5cd 100644
--- a/configs/spresense/nsh/defconfig
+++ b/configs/spresense/nsh/defconfig
@@ -56,4 +56,4 @@ CONFIG_SYSTEM_CLE=y
 CONFIG_SYSTEM_NSH=y
 CONFIG_SYSTEM_NSH_CXXINITIALIZE=y
 CONFIG_UART1_SERIAL_CONSOLE=y
-CONFIG_USER_ENTRYPOINT="nsh_main"
+CONFIG_USER_ENTRYPOINT="spresense_main"
diff --git a/configs/spresense/rndis/defconfig b/configs/spresense/rndis/defconfig
index 0d30d53328..ae335dee99 100644
--- a/configs/spresense/rndis/defconfig
+++ b/configs/spresense/rndis/defconfig
@@ -7,6 +7,7 @@
 #
 # CONFIG_MMCSD_HAVE_WRITEPROTECT is not set
 # CONFIG_MMCSD_SPI is not set
+# CONFIG_MTD_SMART_WEAR_LEVEL is not set
 # CONFIG_STANDARD_SERIAL is not set
 CONFIG_ARCH="arm"
 CONFIG_ARCH_BOARD="spresense"
@@ -35,6 +36,7 @@ CONFIG_FS_FAT=y
 CONFIG_FS_FATTIME=y
 CONFIG_FS_PROCFS=y
 CONFIG_FS_PROCFS_REGISTER=y
+CONFIG_FS_SMARTFS=y
 CONFIG_HAVE_CXX=y
 CONFIG_HAVE_CXXINITIALIZE=y
 CONFIG_I2C=y
@@ -68,6 +70,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_TCP=y
 CONFIG_NET_UDP=y
 CONFIG_NET_UDP_BINDTODEVICE=y
+CONFIG_MTD_BYTE_WRITE=y
+CONFIG_MTD_PARTITION=y
+CONFIG_MTD_SMART=y
+CONFIG_MTD_SMART_ENABLE_CRC=y
+CONFIG_MTD_SMART_SECTOR_SIZE=4096
 CONFIG_NFILE_DESCRIPTORS=8
 CONFIG_NFILE_STREAMS=8
 CONFIG_NSH_ARCHINIT=y
@@ -88,6 +95,9 @@ CONFIG_RTC=y
 CONFIG_SCHED_LPWORK=y
 CONFIG_SCHED_WAITPID=y
 CONFIG_SDCLONE_DISABLE=y
+CONFIG_SMARTFS_ALIGNED_ACCESS=y
+CONFIG_SMARTFS_MAXNAMLEN=30
+CONFIG_SMARTFS_MULTI_ROOT_DIRS=y
 CONFIG_SPI=y
 CONFIG_STACK_COLORATION=y
 CONFIG_START_DAY=16
@@ -102,4 +112,4 @@ CONFIG_UART1_SERIAL_CONSOLE=y
 CONFIG_USBDEV=y
 CONFIG_USBDEV_DMA=y
 CONFIG_USBDEV_DUALSPEED=y
-CONFIG_USER_ENTRYPOINT="nsh_main"
+CONFIG_USER_ENTRYPOINT="spresense_main"
diff --git a/configs/spresense/usbmsc/defconfig b/configs/spresense/usbmsc/defconfig
index 0d97b6c680..4f71daeb5e 100644
--- a/configs/spresense/usbmsc/defconfig
+++ b/configs/spresense/usbmsc/defconfig
@@ -8,6 +8,7 @@
 # CONFIG_CXD56_I2C0_SCUSEQ is not set
 # CONFIG_MMCSD_HAVE_WRITEPROTECT is not set
 # CONFIG_MMCSD_SPI is not set
+# CONFIG_MTD_SMART_WEAR_LEVEL is not set
 # CONFIG_STANDARD_SERIAL is not set
 CONFIG_ARCH="arm"
 CONFIG_ARCH_BOARD="spresense"
@@ -42,6 +43,7 @@ CONFIG_FAT_MAXFNAME=64
 CONFIG_FS_FAT=y
 CONFIG_FS_PROCFS=y
 CONFIG_FS_PROCFS_REGISTER=y
+CONFIG_FS_SMARTFS=y
 CONFIG_HAVE_CXX=y
 CONFIG_HAVE_CXXINITIALIZE=y
 CONFIG_I2C=y
@@ -49,6 +51,11 @@ CONFIG_MAX_TASKS=16
 CONFIG_MAX_WDOGPARMS=2
 CONFIG_MMCSD=y
 CONFIG_MMCSD_SDIO=y
+CONFIG_MTD_BYTE_WRITE=y
+CONFIG_MTD_PARTITION=y
+CONFIG_MTD_SMART=y
+CONFIG_MTD_SMART_ENABLE_CRC=y
+CONFIG_MTD_SMART_SECTOR_SIZE=4096
 CONFIG_NFILE_DESCRIPTORS=8
 CONFIG_NFILE_STREAMS=8
 CONFIG_NSH_ARCHINIT=y
@@ -65,6 +72,9 @@ CONFIG_RTC=y
 CONFIG_RTC_DRIVER=y
 CONFIG_SCHED_WAITPID=y
 CONFIG_SDCLONE_DISABLE=y
+CONFIG_SMARTFS_ALIGNED_ACCESS=y
+CONFIG_SMARTFS_MAXNAMLEN=30
+CONFIG_SMARTFS_MULTI_ROOT_DIRS=y
 CONFIG_SPI=y
 CONFIG_START_DAY=6
 CONFIG_START_MONTH=12
@@ -83,4 +93,4 @@ CONFIG_USBDEV_DUALSPEED=y
 CONFIG_USBMSC=y
 CONFIG_USBMSC_COMPOSITE=y
 CONFIG_USBMSC_REMOVABLE=y
-CONFIG_USER_ENTRYPOINT="nsh_main"
+CONFIG_USER_ENTRYPOINT="spresense_main"
diff --git a/configs/spresense/usbnsh/defconfig b/configs/spresense/usbnsh/defconfig
index ddb4b5ac21..f7df5d4034 100644
--- a/configs/spresense/usbnsh/defconfig
+++ b/configs/spresense/usbnsh/defconfig
@@ -8,6 +8,7 @@
 # CONFIG_CXD56_I2C0_SCUSEQ is not set
 # CONFIG_MMCSD_HAVE_WRITEPROTECT is not set
 # CONFIG_MMCSD_SPI is not set
+# CONFIG_MTD_SMART_WEAR_LEVEL is not set
 # CONFIG_STANDARD_SERIAL is not set
 CONFIG_ARCH="arm"
 CONFIG_ARCH_BOARD="spresense"
@@ -35,6 +36,7 @@ CONFIG_FAT_MAXFNAME=64
 CONFIG_FS_FAT=y
 CONFIG_FS_PROCFS=y
 CONFIG_FS_PROCFS_REGISTER=y
+CONFIG_FS_SMARTFS=y
 CONFIG_HAVE_CXX=y
 CONFIG_HAVE_CXXINITIALIZE=y
 CONFIG_I2C=y
@@ -42,6 +44,11 @@ CONFIG_MAX_TASKS=16
 CONFIG_MAX_WDOGPARMS=2
 CONFIG_MMCSD=y
 CONFIG_MMCSD_SDIO=y
+CONFIG_MTD_BYTE_WRITE=y
+CONFIG_MTD_PARTITION=y
+CONFIG_MTD_SMART=y
+CONFIG_MTD_SMART_ENABLE_CRC=y
+CONFIG_MTD_SMART_SECTOR_SIZE=4096
 CONFIG_NFILE_DESCRIPTORS=8
 CONFIG_NFILE_STREAMS=8
 CONFIG_NSH_ARCHINIT=y
@@ -58,6 +65,9 @@ CONFIG_RTC=y
 CONFIG_RTC_DRIVER=y
 CONFIG_SCHED_WAITPID=y
 CONFIG_SDCLONE_DISABLE=y
+CONFIG_SMARTFS_ALIGNED_ACCESS=y
+CONFIG_SMARTFS_MAXNAMLEN=30
+CONFIG_SMARTFS_MULTI_ROOT_DIRS=y
 CONFIG_SPI=y
 CONFIG_START_DAY=6
 CONFIG_START_MONTH=12
@@ -73,4 +83,4 @@ CONFIG_USBDEV_DUALSPEED=y
 CONFIG_USBMSC=y
 CONFIG_USBMSC_EPBULKIN=1
 CONFIG_USBMSC_REMOVABLE=y
-CONFIG_USER_ENTRYPOINT="nsh_main"
+CONFIG_USER_ENTRYPOINT="spresense_main"
diff --git a/configs/spresense/wifi/defconfig b/configs/spresense/wifi/defconfig
index b3bfef0baa..9339db6af9 100644
--- a/configs/spresense/wifi/defconfig
+++ b/configs/spresense/wifi/defconfig
@@ -85,6 +85,9 @@ CONFIG_SCHED_LPWORK=y
 CONFIG_SCHED_LPWORKPRIORITY=30
 CONFIG_SCHED_WAITPID=y
 CONFIG_SDCLONE_DISABLE=y
+CONFIG_SMARTFS_ALIGNED_ACCESS=y
+CONFIG_SMARTFS_MAXNAMLEN=30
+CONFIG_SMARTFS_MULTI_ROOT_DIRS=y
 CONFIG_STACK_COLORATION=y
 CONFIG_START_DAY=16
 CONFIG_START_MONTH=7
@@ -100,7 +103,7 @@ CONFIG_USBDEV_DUALSPEED=y
 CONFIG_USBMSC=y
 CONFIG_USBMSC_EPBULKIN=1
 CONFIG_USBMSC_REMOVABLE=y
-CONFIG_USER_ENTRYPOINT="nsh_main"
+CONFIG_USER_ENTRYPOINT="spresense_main"
 CONFIG_WIRELESS_GS2200M=y
 CONFIG_WL_GS2200M=y
 CONFIG_WL_GS2200M_SPI_FREQUENCY=10000000