diff --git a/README.en.md b/README.en.md
index 25139402202cc3094d805953dbda8185e5af70cf..3ca2bd1446421ec7b7b2ff3fbb7b3556d284fce7 100644
--- a/README.en.md
+++ b/README.en.md
@@ -29,7 +29,7 @@ You can get introduction of openEuler RaspberryPi SIG from [sig-RaspberryPi](htt
 - Join Slack workspace: [openeuler-raspberrypi](https://openeuler-raspberrypi.slack.com )
   - [Invite link](https://join.slack.com/t/openeuler-raspberrypi/shared_invite/zt-kp6de2va-2t4k6JqvNWKogtYv1Kg3pQ): This link will be due on Feb 11th, 2021. We will update the link periodically.
 - Weekly meeting schedule
-  - Meeting Time: The 1st and 3rd Tuesday of each month, 15:00 - 15:30 UTC+8.
+  - Meeting Time: The 1st and 3rd Wednesday of each month, 20:00 - 20:30 UTC+8.
   - Meeting Link: There are two methods to get the meeting link which will be updated before each meeting.
     - Log in to the [openEuler Community](https://openeuler.org/) website, then view the booking information of `sig-RaspberryPi例会` in the meeting calendar.
     - Search `openEuler` in mini programs of Wechat, add `openEuler mini program`. Then click `会议` and view the booking information of `sig-RaspberryPi例会`.
diff --git a/README.md b/README.md
index 1cb95bd25ca9ae96179c5203ea40fd5422c95588..1cf1a71245d27c21859ad12fa23990aa64cd97a1 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ SIG 组基本信息位于 [sig-RaspberryPi](https://gitee.com/jianminw/community
 - 建立或回复 issue：欢迎通过建立或回复 issue 来讨论，此 SIG 组维护的仓库列表可在 [sig-RaspberryPi](https://gitee.com/jianminw/community/tree/master/sig/sig-RaspberryPi) 中查看。
 - 加入 Slack 群组：[openeuler-raspberrypi](https://openeuler-raspberrypi.slack.com )
   - [加入群组链接](https://join.slack.com/t/openeuler-raspberrypi/shared_invite/zt-kp6de2va-2t4k6JqvNWKogtYv1Kg3pQ)，此链接于 2021/02/11 失效，我们会定期更新。
-- SIG 组会议：每个月的第一个和第三个周二下午 03:00 - 03:30 会进行一次讨论会议
+- SIG 组会议：每个月的第一个和第三个周三晚上 20:00 - 20:30 会进行一次讨论会议
   - 会议链接：有以下两种获取方式
     - [openEuler 社区网站](https://openeuler.org/)下的会议日历中查看 `sig-RaspberryPi例会` 预定信息。
     - 微信小程序搜索 `openEuler`，添加 `openEuler` 小程序，可在其`会议`栏目查看 `sig-RaspberryPi例会` 预定信息。
diff --git a/scripts/build-image-common.sh b/scripts/build-image-common.sh
index 7cbc5e2441189f718a50f156f1acc850b0fc3cb9..2dffb01c4498167ce58e897c501ac5073377befb 100644
--- a/scripts/build-image-common.sh
+++ b/scripts/build-image-common.sh
@@ -244,11 +244,19 @@ prepare(){
         ERROR "${os_release_name} can not be found!"
         exit 2
     fi
-    set -e
-
     wget https://raw.githubusercontent.com/RPi-Distro/raspberrypi-sys-mods/master/etc.armhf/udev/rules.d/99-com.rules -P ${tmp_dir}/
+    if [ $? -ne 0 ]; then
+        cp ${euler_dir}/99-com.rules ${tmp_dir}/
+    fi
     wget https://git.kernel.org/pub/scm/linux/kernel/git/sforshee/wireless-regdb.git/plain/regulatory.db.p7s -P ${tmp_dir}/
+    if [ $? -ne 0 ]; then
+        cp ${euler_dir}/regulatory.db.p7s ${tmp_dir}/
+    fi
     wget https://git.kernel.org/pub/scm/linux/kernel/git/sforshee/wireless-regdb.git/plain/regulatory.db -P ${tmp_dir}/
+    if [ $? -ne 0 ]; then
+        cp ${euler_dir}/regulatory.db ${tmp_dir}/
+    fi
+    set -e
     if [ ! -d ${img_dir} ]; then
         mkdir -p ${img_dir}
     fi
diff --git a/scripts/build-image.sh b/scripts/build-image.sh
index 8a4f19cb35d5b90ee79b89eaa03b9d5044e29b7e..4a341a100212cff024e87e2e31a2c7fee2b7b1e4 100644
--- a/scripts/build-image.sh
+++ b/scripts/build-image.sh
@@ -258,8 +258,8 @@ make_rootfs(){
         mkdir -p $rootfs_dir/etc/sysconfig/network-scripts
     fi
     cp ${euler_dir}/ifcfg-eth0 $rootfs_dir/etc/sysconfig/network-scripts/ifcfg-eth0
-    mkdir -p ${rootfs_dir}/usr/bin ${rootfs_dir}/lib/udev/rules.d ${rootfs_dir}/lib/systemd/system
-    if [ -d ${rootfs_dir}/usr/share/licenses/raspi ]; then
+    mkdir -p ${rootfs_dir}/lib/udev/rules.d
+    if [ ! -d ${rootfs_dir}/usr/share/licenses/raspi ]; then
         mkdir -p ${rootfs_dir}/usr/share/licenses/raspi
     fi
     cp ${euler_dir}/*.rules ${rootfs_dir}/lib/udev/rules.d/