diff --git a/.gitignore b/.gitignore
index 063ce59a6..ed5f9e8ef 100755
--- a/.gitignore
+++ b/.gitignore
@@ -97,3 +97,4 @@ device/config/chips/v851s3/bin/*
 device/config/chips/v851s3/configs/default/riscv.fex
 device/config/chips/v851s/bin/*
 device/config/chips/v851s/configs/default/riscv.fex
+target/allwinner/v851s3-fastboot_sl100_front/temp_usr/*
diff --git a/build/aw-upgrade.mk b/build/aw-upgrade.mk
index 30fd86d5d..46222ec4f 100755
--- a/build/aw-upgrade.mk
+++ b/build/aw-upgrade.mk
@@ -103,8 +103,8 @@ endef
 
 define Aw/BuildUpgradeImage/resume
 	#$(1): target_dir #$(2): temp_usr
-	rm -rf $(1)/usr
-	mv $(2) $(1)/usr
+	# rm -rf $(1)/usr
+	# mv $(2) $(1)/usr
 endef
 
 define Aw/BuildUpgradeImage/normal-prepare
diff --git a/build/envsetup.sh b/build/envsetup.sh
index f80fb6927..ddddb30ff 100755
--- a/build/envsetup.sh
+++ b/build/envsetup.sh
@@ -2058,6 +2058,20 @@ function mkrootfs_jffs2()
 	fi
 }
 
+function mkrootfs_erofs()
+{
+    kernelfs_formate=`grep CONFIG_EROFS_FS=y $(gettop)/lichee/*/.config | cut -d ":" -f 2`
+    echo -e "\033[31m $kernelfs_formate\033[0m"
+    if [ -z $kernelfs_formate ];then
+        echo -e "\033[31m run -make kernel_menuconfig- choice "erofs" first!\033[0m"
+    else
+        $(gettop)/out/host/bin/mkfs.erofs -zlz4 $(gettop)/out/${TARGET_BOARD}/root.erofs  $(gettop)/out/${TARGET_BOARD}/compile_dir/target/rootfs
+        rm  $(gettop)/out/${TARGET_BOARD}/rootfs.img
+        dd if=$(gettop)/out/${TARGET_BOARD}/root.erofs of=$(gettop)/out/${TARGET_BOARD}/rootfs.img bs=128k conv=sync
+    fi
+}
+
+
 function recomp_rootfs()
 {
     T=$(gettop)
@@ -2074,6 +2088,7 @@ function recomp_rootfs()
         [ x$file_formate = x"SQUASHFS" ] && mkrootfs_squashfs4
         [ x$file_formate = x"EXT4FS" ] && mkrootfs_ext4
         [ x$file_formate = x"JFFS2" ] && mkrootfs_jffs2
+        [ x$file_formate = x"EROFS" ] && mkrootfs_erofs
     fi
 }
 
diff --git a/device/config/chips/v851s3/configs/fastboot_sl100_front/linux/config-4.9 b/device/config/chips/v851s3/configs/fastboot_sl100_front/linux/config-4.9
index 61199b56e..e386d6b66 100755
--- a/device/config/chips/v851s3/configs/fastboot_sl100_front/linux/config-4.9
+++ b/device/config/chips/v851s3/configs/fastboot_sl100_front/linux/config-4.9
@@ -3144,11 +3144,7 @@ CONFIG_NLS_ISO8859_1=y
 # CONFIG_NLS_MAC_TURKISH is not set
 # CONFIG_NLS_UTF8 is not set
 # CONFIG_DLM is not set
-CONFIG_EROFS_FS=y
-# CONFIG_EROFS_FS_DEBUG is not set
-# CONFIG_EROFS_FS_XATTR is not set
-CONFIG_EROFS_FS_ZIP=y
-CONFIG_EROFS_FS_CLUSTER_PAGE_LIMIT=1
+# CONFIG_EROFS_FS is not set
 
 #
 # Kernel hacking
diff --git a/device/config/chips/v851s3/configs/fastboot_sl100_front/linux/config-4.9_recovery b/device/config/chips/v851s3/configs/fastboot_sl100_front/linux/config-4.9_recovery
index 1a4b4d648..f664ddd6a 100755
--- a/device/config/chips/v851s3/configs/fastboot_sl100_front/linux/config-4.9_recovery
+++ b/device/config/chips/v851s3/configs/fastboot_sl100_front/linux/config-4.9_recovery
@@ -2596,11 +2596,7 @@ CONFIG_NLS_ISO8859_1=y
 # CONFIG_NLS_MAC_TURKISH is not set
 # CONFIG_NLS_UTF8 is not set
 # CONFIG_DLM is not set
-CONFIG_EROFS_FS=y
-# CONFIG_EROFS_FS_DEBUG is not set
-# CONFIG_EROFS_FS_XATTR is not set
-CONFIG_EROFS_FS_ZIP=y
-CONFIG_EROFS_FS_CLUSTER_PAGE_LIMIT=1
+# CONFIG_EROFS_FS is not set
 
 #
 # Kernel hacking
diff --git a/device/config/chips/v851s3/configs/fastboot_sl100_front/linux/sys_partition_nor.fex b/device/config/chips/v851s3/configs/fastboot_sl100_front/linux/sys_partition_nor.fex
index d7ced1fcd..84818e85f 100755
--- a/device/config/chips/v851s3/configs/fastboot_sl100_front/linux/sys_partition_nor.fex
+++ b/device/config/chips/v851s3/configs/fastboot_sl100_front/linux/sys_partition_nor.fex
@@ -53,13 +53,13 @@ size = 16
 
 [partition]
     name         = rootfs
-    size         = 20992
+    size         = 20480
     downloadfile = "rootfs.fex"
     user_type    = 0x8000
 
 [partition]
     name         = extend
-    size         = 4352
+    size         = 4096
     downloadfile = "usr.fex"
     user_type    = 0x8000
 
diff --git a/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/APP/SL100FRONTPANEL b/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/APP/SL100FRONTPANEL
index 164b05db3..9b85a5156 100755
Binary files a/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/APP/SL100FRONTPANEL and b/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/APP/SL100FRONTPANEL differ
diff --git a/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/APP/picture/light.png b/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/APP/picture/light.png
index afa74899f..c1be2b260 100755
Binary files a/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/APP/picture/light.png and b/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/APP/picture/light.png differ
diff --git a/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/APP/picture/light1.png b/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/APP/picture/light1.png
new file mode 100755
index 000000000..afa74899f
Binary files /dev/null and b/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/APP/picture/light1.png differ
diff --git a/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/APP/picture/power.png b/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/APP/picture/power.png
new file mode 100755
index 000000000..244ff2a1b
Binary files /dev/null and b/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/APP/picture/power.png differ
diff --git a/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/APP/picture/vol.png b/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/APP/picture/vol.png
index 704516ff5..43a56fc3b 100755
Binary files a/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/APP/picture/vol.png and b/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/APP/picture/vol.png differ
diff --git a/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/APP/picture/vol1.png b/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/APP/picture/vol1.png
new file mode 100755
index 000000000..704516ff5
Binary files /dev/null and b/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/APP/picture/vol1.png differ
diff --git a/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/etc/init.d/rc.final b/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/etc/init.d/rc.final
index fa7ce105c..a6c0f047b 100755
--- a/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/etc/init.d/rc.final
+++ b/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/etc/init.d/rc.final
@@ -106,7 +106,7 @@ echo in > /sys/class/gpio/gpio164/direction
 
 echo 0 > /sys/class/pwm/pwmchip0/export
 echo 100000 > /sys/class/pwm/pwmchip0/pwm0/period
-echo 60000 > /sys/class/pwm/pwmchip0/pwm0/duty_cycle
+echo 70000 > /sys/class/pwm/pwmchip0/pwm0/duty_cycle
 echo 1 > /sys/class/pwm/pwmchip0/pwm0/enable
 
 # echo 1 > /sys/class/gpio/gpio160/value
diff --git a/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/files/pseudo_init b/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/files/pseudo_init
index 49cade373..41186996b 100755
--- a/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/files/pseudo_init
+++ b/target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/files/pseudo_init
@@ -142,6 +142,64 @@ mount_usr(){
 }
 
 
+rc_mount_filesystem()
+{
+	local fs_src="$1"
+	local fs_mntpt="$2"
+	# mount filesystem
+	if [ -e "$fs_src" -a -d "$fs_mntpt" ]; then
+		[ -L "$fs_src" ] && fs_src=$(readlink "$fs_src")
+		case "$fs_src" in
+			/dev/mtdblock*)
+				mount -t jffs2 "$fs_src" "$fs_mntpt" 2>/dev/null
+				if [ "$?" -ne "0" ]; then
+					mkfs_jffs2 "$fs_src"
+					mount -t jffs2 "$fs_src" "$fs_mntpt" 2>/dev/null
+				fi
+				;;
+			/dev/ubi*)
+				mount -t ubifs "$fs_src" "$fs_mntpt" 2>/dev/null
+				if [ "$?" -ne "0" ]; then
+					mkfs_ubifs "$fs_src"
+					mount -t ubifs "$fs_src" "$fs_mntpt" 2>/dev/null
+				fi
+				;;
+			*)
+				/usr/sbin/fsck.ext4 -y "$fs_src" &>/dev/null
+				mount -t ext4 "$fs_src" "$fs_mntpt" 2>/dev/null
+				if [ "$?" -ne "0" ]; then
+					# linux < 3.18 not support metadata_csum, e2fsprogs version:1.46.4
+					grep "Linux version 3.*" /proc/version >> /dev/null
+					if [ $? -eq 0 ]; then
+						echo "linux < 3.18, mkfs.ext4 do not use metadata and journal checksum features."
+						mkfs.ext4 -m 0 -O ^metadata_csum "$fs_src" >/dev/null
+					else
+						mkfs.ext4 -m 0 "$fs_src" >/dev/null
+					fi
+					mount -t ext4 "$fs_src" "$fs_mntpt" 2>/dev/null
+				fi
+				;;
+		esac
+
+		# restore /mnt file contexts
+		if [ -f /sbin/restorecon ]; then
+			/sbin/restorecon -R /mnt
+		fi
+	fi
+}
+
+rc_mount()
+{
+	rc_mount_filesystem "/dev/by-name/UDISK" "/mnt/UDISK"
+# 	rc_mount_filesystem "/dev/by-name/user-res" "/mnt/user"
+
+	# enable hotplug
+	[ -x /sbin/mdev ] && {
+		[ -f /proc/sys/kernel/hotplug ] && echo /sbin/mdev > /proc/sys/kernel/hotplug
+		/sbin/mdev -s
+	}
+}
+
 mount_overlay() {
 
 	local root_dev="$(readlink /dev/by-name/rootfs)"
@@ -279,6 +337,8 @@ mount_usr
 [ x"$MOUNT_ETC" = x"1" ] && mount_etc
 # [ x"$MOUNT_OVERLAY" = x"1" ] && mount_overlay rootfs_data	#choose rootfs_data or UDISK
 
+rc_mount
+
 /APP/SL100FRONTPANEL &
 
 exec /sbin/init
diff --git a/target/allwinner/v851s3-fastboot_sl100_front/defconfig b/target/allwinner/v851s3-fastboot_sl100_front/defconfig
index 29a7db7a5..b60c5338c 100755
--- a/target/allwinner/v851s3-fastboot_sl100_front/defconfig
+++ b/target/allwinner/v851s3-fastboot_sl100_front/defconfig
@@ -52,15 +52,17 @@ CONFIG_EXTERNAL_CPIO=""
 #
 # CONFIG_TARGET_ROOTFS_EXT4FS is not set
 # CONFIG_TARGET_ROOTFS_JFFS2 is not set
-CONFIG_TARGET_ROOTFS_EROFS=y
-# CONFIG_TARGET_ROOTFS_SQUASHFS is not set
+# CONFIG_TARGET_ROOTFS_EROFS is not set
+CONFIG_TARGET_ROOTFS_SQUASHFS=y
 # CONFIG_ROOTFS_SQUASHFS_XZ is not set
-# CONFIG_ROOTFS_SQUASHFS_LZ4 is not set
+CONFIG_ROOTFS_SQUASHFS_LZ4=y
 # CONFIG_ROOTFS_SQUASHFS_ZLIB is not set
 # CONFIG_USR_SQUASHFS_FOLLOW_ROOTFS is not set
 # CONFIG_USR_SQUASHFS_XZ is not set
-# CONFIG_USR_SQUASHFS_LZ4 is not set
+CONFIG_USR_SQUASHFS_LZ4=y
 # CONFIG_USR_SQUASHFS_ZLIB is not set
+CONFIG_KERNEL_SQUASHFS_LZ4=y
+CONFIG_TARGET_SQUASHFS_BLOCK_SIZE=256
 CONFIG_TARGET_UBIFS_FREE_SPACE_FIXUP=y
 CONFIG_TARGET_UBIFS_JOURNAL_SIZE=""
 
@@ -2728,7 +2730,7 @@ CONFIG_FIRMWARE_PATH="/lib/firmware/"
 # CONFIG_PACKAGE_libchipmunk is not set
 # CONFIG_PACKAGE_libdrm is not set
 # CONFIG_PACKAGE_libepoxy is not set
-# CONFIG_PACKAGE_libjpeg is not set
+CONFIG_PACKAGE_libjpeg=y
 # CONFIG_PACKAGE_libpixman is not set
 CONFIG_PACKAGE_libpng=y
 # CONFIG_PACKAGE_librsvg is not set
diff --git a/target/allwinner/v851s3-fastboot_sl100_front/defconfig_ota b/target/allwinner/v851s3-fastboot_sl100_front/defconfig_ota
index 1205352c7..7f7537e21 100755
--- a/target/allwinner/v851s3-fastboot_sl100_front/defconfig_ota
+++ b/target/allwinner/v851s3-fastboot_sl100_front/defconfig_ota
@@ -59,15 +59,17 @@ CONFIG_EXTERNAL_CPIO=""
 #
 # CONFIG_TARGET_ROOTFS_EXT4FS is not set
 # CONFIG_TARGET_ROOTFS_JFFS2 is not set
-CONFIG_TARGET_ROOTFS_EROFS=y
-# CONFIG_TARGET_ROOTFS_SQUASHFS is not set
+# CONFIG_TARGET_ROOTFS_EROFS is not set
+CONFIG_TARGET_ROOTFS_SQUASHFS=y
 # CONFIG_ROOTFS_SQUASHFS_XZ is not set
-# CONFIG_ROOTFS_SQUASHFS_LZ4 is not set
+CONFIG_ROOTFS_SQUASHFS_LZ4=y
 # CONFIG_ROOTFS_SQUASHFS_ZLIB is not set
 # CONFIG_USR_SQUASHFS_FOLLOW_ROOTFS is not set
 # CONFIG_USR_SQUASHFS_XZ is not set
-# CONFIG_USR_SQUASHFS_LZ4 is not set
+CONFIG_USR_SQUASHFS_LZ4=y
 # CONFIG_USR_SQUASHFS_ZLIB is not set
+CONFIG_KERNEL_SQUASHFS_LZ4=y
+CONFIG_TARGET_SQUASHFS_BLOCK_SIZE=256
 CONFIG_TARGET_UBIFS_FREE_SPACE_FIXUP=y
 CONFIG_TARGET_UBIFS_JOURNAL_SIZE=""