diff --git a/build_milkv.sh b/build_milkv.sh
index 1ebe67f13..c465e1643 100755
--- a/build_milkv.sh
+++ b/build_milkv.sh
@@ -77,15 +77,16 @@ function prepare_env()
 
   source build/${MV_BUILD_ENV} > /dev/null 2>&1
   defconfig ${MV_BOARD_LINK} > /dev/null 2>&1
+
+  echo "OUTPUT_DIR: ${OUTPUT_DIR}"  # @build/milkvsetup.sh
 }
 
 function milkv_duo_build()
 {
   # clean old img
-  install_dir="install/soc_${MV_BOARD_LINK}"
-  old_image_count=`ls ${install_dir}/*.img* | wc -l`
+  old_image_count=`ls ${OUTPUT_DIR}/*.img* | wc -l`
   if [ ${old_image_count} -ge 0 ]; then
-    pushd ${install_dir}
+    pushd ${OUTPUT_DIR}
     rm -rf *.img*
     popd
   fi
@@ -102,18 +103,23 @@ function milkv_duo_build()
 
 function milkv_duo_pack()
 {
-  if [ "$(id -u)" -ne 0 ]; then
-    print_info "Creating sd card img requires root privileges"
-    sudo echo "Running with root privileges now"
-  fi
-
   pack_sd_image
 
   [ ! -d out ] && mkdir out
 
-  image_count=`ls ${install_dir}/*.img | wc -l`
+  image_count=`ls ${OUTPUT_DIR}/*.img | wc -l`
   if [ ${image_count} -ge 0 ]; then
-    mv ${install_dir}/*.img out/
+    mv ${OUTPUT_DIR}/*.img out/
+
+    # rename milkv-duo.img file with time
+    pushd out
+    for img in *.img
+    do
+      if [ "${img}" == "${MILKV_BOARD}.img" ]; then
+        mv $img ${MILKV_BOARD}-`date +%Y%m%d-%H%M`.img
+      fi
+    done
+    popd
 
     # show latest img
     latest_img=`ls -t out/*.img | head -n1`
diff --git a/buildroot-2021.05/configs/milkv_duo_musl_riscv64_defconfig b/buildroot-2021.05/configs/milkv_duo_musl_riscv64_defconfig
index fd51bf35f..5bf64c7ed 100644
--- a/buildroot-2021.05/configs/milkv_duo_musl_riscv64_defconfig
+++ b/buildroot-2021.05/configs/milkv_duo_musl_riscv64_defconfig
@@ -310,6 +310,8 @@ BR2_PACKAGE_E2FSPROGS=y
 # BR2_PACKAGE_E2FSPROGS_DEBUGFS is not set
 # BR2_PACKAGE_E2FSPROGS_E2IMAGE is not set
 
+BR2_PACKAGE_HOST_GENIMAGE=y
+
 #
 # e2scrub needs bash, coreutils, lvm2, and util-linux
 #
diff --git a/buildroot-2021.05/dl/genimage/.lock b/buildroot-2021.05/dl/genimage/.lock
new file mode 100644
index 000000000..e69de29bb
diff --git a/buildroot-2021.05/dl/genimage/genimage-14.tar.xz b/buildroot-2021.05/dl/genimage/genimage-14.tar.xz
new file mode 100644
index 000000000..e5940a819
Binary files /dev/null and b/buildroot-2021.05/dl/genimage/genimage-14.tar.xz differ
diff --git a/buildroot-2021.05/dl/libconfuse/.lock b/buildroot-2021.05/dl/libconfuse/.lock
new file mode 100644
index 000000000..e69de29bb
diff --git a/buildroot-2021.05/dl/libconfuse/confuse-3.3.tar.xz b/buildroot-2021.05/dl/libconfuse/confuse-3.3.tar.xz
new file mode 100644
index 000000000..1c319dafd
Binary files /dev/null and b/buildroot-2021.05/dl/libconfuse/confuse-3.3.tar.xz differ
diff --git a/milkv/gen_burn_image_sd.sh b/milkv/gen_burn_image_sd.sh
index af5088609..0597e10dc 100755
--- a/milkv/gen_burn_image_sd.sh
+++ b/milkv/gen_burn_image_sd.sh
@@ -1,82 +1,44 @@
 #!/bin/bash
 
-# sd image generator
+# milkv sd image generator
 
 # usage
 if [ "$#" -ne "1" ]; then
-  echo "usage: sudo ${0} OUTPUT_DIR"
+  echo "usage: ${0} OUTPUT_DIR"
   echo ""
   echo "       The script is used to create a sdcard image with two partitions, "
   echo "       one is fat32 with 128MB, the other is ext4 with 256MB."
-  echo "       You can modify the capacities in this script as you wish!"
+  echo "       You can modify the capacities in genimage cfg as you wish!"
+  echo "       genimage cfg: milkv/genimage-milkv-duo.cfg"
   echo ""
   echo "Note:  Please backup you sdcard files before using this image!"
 
   exit
 fi
 
-vfat_cap=128M
-vfat_label="boot"
-ext4_cap=256M
-ext4_label="rootfs"
+echo "BR_DIR: $BR_DIR"
+echo "BR_BOARD: $BR_BOARD"
+
+# genimage command in buildroot host bin
+BR_HOST_BIN="${BR_DIR}/output/${BR_BOARD}/host/bin"
+if [ ! -d ${BR_HOST_BIN} ]; then
+  echo "host/bin not found, check buildroot output dir!"
+  exit 1
+fi
+
+export PATH=${BR_HOST_BIN}:${PATH}
 
 output_dir=$1
 echo ${output_dir}
 pushd ${output_dir}
 
-# gen a empty image
-image=${MILKV_BOARD}-`date +%Y%m%d-%H%M`.img
-echo ${image}
-dd if=/dev/zero of=./${image} bs=1M count=512
+[ -d tmp ] && rm -rf tmp
 
-################################
-# Note: do not change this flow
-################################
-sudo fdisk ./${image} << EOF
-n
-p
-1
-
-+${vfat_cap}
-n
-p
-2
-
-+${ext4_cap}
-w
-EOF
-# Note end
-################################
-
-dev_name=`sudo losetup -f`
-echo ${dev_name}
-echo ""
-
-sudo losetup ${dev_name} ./${image}
-sudo partprobe ${dev_name}
-
-sudo mkfs.vfat -F 32 -n ${vfat_label} ${dev_name}p1
-sudo mkfs.ext4 -L ${ext4_label} ${dev_name}p2
-
-# mount partitions
-rm ./tmp1 ./tmp2 -rf
-mkdir tmp1 tmp2
-sudo mount -t vfat ${dev_name}p1 tmp1/
-sudo mount -t ext4 ${dev_name}p2 tmp2/
-
-# copy boot file and rootfs
-sudo cp ${output_dir}/fip.bin ./tmp1/
-sudo cp ${output_dir}/rawimages/boot.sd ./tmp1/
-sudo cp -raf ${output_dir}/fs/* ./tmp2
-
-sync
-
-# umount
-sudo umount tmp1 tmp2
-sudo losetup -d ${dev_name}
-rmdir tmp1 tmp2
-
-echo "Gen image successful: ${image}"
-echo ""
+genimage --config ${TOP_DIR}/milkv/genimage-${MILKV_BOARD}.cfg --rootpath fs/ --inputpath ${PWD} --outputpath ${PWD}
+if [ $? -eq 0 ]; then
+    echo "gnimage for ${MILKV_BOARD} success!"
+else
+    echo "gnimage for ${MILKV_BOARD} failed!"
+fi
 
 popd
diff --git a/milkv/genimage-milkv-duo.cfg b/milkv/genimage-milkv-duo.cfg
new file mode 100644
index 000000000..40a95c7fb
--- /dev/null
+++ b/milkv/genimage-milkv-duo.cfg
@@ -0,0 +1,33 @@
+image boot.vfat {
+	vfat {
+		label = "boot"
+		files = {
+			"fip.bin",
+			"rawimages/boot.sd",
+		}
+	}
+	size = 128M
+}
+
+image rootfs.ext4 {
+	ext4 {
+		label = "rootfs"
+	}
+	size = 256M
+}
+
+image milkv-duo.img {
+	hdimage {
+	}
+
+	partition boot {
+		partition-type = 0xC
+		bootable = "true"
+                image = "boot.vfat"
+	}
+
+	partition rootfs {
+		partition-type = 0x83
+		image = "rootfs.ext4"
+	}
+}