diff --git a/scripts/autoupdate.sh b/scripts/autoupdate.sh
index b66434e..9995398 100644
--- a/scripts/autoupdate.sh
+++ b/scripts/autoupdate.sh
@@ -2,21 +2,18 @@
 set -e $1
 
 opkg update || true
-if ! command -v pv &> /dev/null
-then
-	opkg install pv
-	if ! command -v pv &> /dev/null; then echo -e '\e[91mpv命令不可用，升级中止！\e[0m' && exit 1; fi
-fi
-if ! command -v fdisk &> /dev/null
-then
-	opkg install --force-overwrite fdisk
-	if ! command -v fdisk &> /dev/null; then echo -e '\e[91mfdisk命令不可用，升级中止！\e[0m' && exit 1; fi
-fi
-if ! command -v losetup &> /dev/null
-then
-	opkg install --force-overwrite losetup
-	if ! command -v losetup &> /dev/null; then echo -e '\e[91mlosetup命令不可用，升级中止！\e[0m' && exit 1; fi
-fi
+function proceed_command () {
+	if ! command -v $1 &> /dev/null; then opkg install --force-overwrite $1; fi
+	if ! command -v $1 &> /dev/null; then echo -e '\e[91m'$1'命令不可用，升级中止！\e[0m' && exit 1; fi
+}
+proceed_command pv
+proceed_command fdisk
+proceed_command sfdisk
+proceed_command losetup
+proceed_command resize2fs
+wget -P /tmp https://ghproxy.com/https://github.com/klever1988/nanopi-openwrt/raw/zstd-bin/truncate
+wget -P /tmp https://ghproxy.com/https://github.com/klever1988/nanopi-openwrt/raw/zstd-bin/ddnz
+chmod +x /tmp/truncate /tmp/ddnz
 
 board_id=$(cat /etc/board.json | jsonfilter -e '@["model"].name' | tail -c 4 | tr -d "\n" | awk '{print tolower($0)}')
 mount -t tmpfs -o remount,size=650m tmpfs /tmp
@@ -37,22 +34,21 @@ else
 	fi
 fi
 
-#if [ -f /mnt/mmcblk0p2/artifact/FriendlyWrt*.img.gz ]; then
-    #cd /mnt/mmcblk0p2/artifact/
-    if [ `md5sum -c md5sum.txt|grep -c "OK"` -eq 0 ]; then
-        echo -e '\e[91m固件HASH值匹配失败，脚本退出\e[0m'
-		exit 1
-    fi
-    #cd /mnt/mmcblk0p2
-	echo -e '\e[92m准备解压镜像文件\e[0m'
-	pv $board_id.img.gz | gunzip -dc > FriendlyWrt.img && rm $board_id.img.gz
+if [ `md5sum -c md5sum.txt|grep -c "OK"` -eq 0 ]; then
+	echo -e '\e[91m固件HASH值匹配失败，脚本退出\e[0m'
+	exit 1
+fi
+echo -e '\e[92m准备解压镜像文件\e[0m'
+pv $board_id.img.gz | gunzip -dc > FriendlyWrt.img && rm $board_id.img.gz
+
+bs=`expr $(cat /sys/block/mmcblk0/size) \* 512`
+../truncate -s $bs FriendlyWrt.img
+echo ", +" | sfdisk -N 2 FriendlyWrt.img
 
-#fi
 lodev=$(losetup -f)
-offset=`expr $(fdisk -l -u FriendlyWrt.img | tail -n1 | awk '{print $2}') \* 512`
-losetup -o $offset $lodev FriendlyWrt.img
+losetup -P $lodev FriendlyWrt.img
 mkdir -p /mnt/img
-mount -t ext4 $lodev /mnt/img
+mount -t ext4 ${lodev}p2 /mnt/img
 echo -e '\e[92m解压已完成，准备编辑镜像文件，写入备份信息\e[0m'
 cd /mnt/img
 sysupgrade -b back.tar.gz
@@ -63,14 +59,21 @@ echo -e '\e[92m备份文件已经写入，移除挂载\e[0m'
 #rm back.tar.gz
 cd /tmp/upg
 umount /mnt/img
+
+sleep 2
+umount ${lodev}p1
+umount ${lodev}p2
+e2fsck -pf ${lodev}p2 || true
+resize2fs ${lodev}p2
+
 losetup -d $lodev
 echo -e '\e[92m正在打包...\e[0m'
-#zstdmt /mnt/mmcblk0p2/FriendlyWrt.img -o /tmp/FriendlyWrtupdate.img.zst
 echo -e '\e[92m开始写入，请勿中断...\e[0m'
 if [ -f FriendlyWrt.img ]; then
 	echo 1 > /proc/sys/kernel/sysrq
-	echo u > /proc/sysrq-trigger || umount /
-	pv FriendlyWrt.img | dd of=/dev/mmcblk0 conv=fsync
+	echo u > /proc/sysrq-trigger && umount / || true
+	#pv FriendlyWrt.img | dd of=/dev/mmcblk0 conv=fsync
+	../ddnz FriendlyWrt.img /dev/mmcblk0
 	echo -e '\e[92m刷机完毕，正在重启...\e[0m'
 	echo b > /proc/sysrq-trigger
 fi