diff --git a/.github/workflows/lo-test.yml b/.github/workflows/lo-test.yml
index ada5c369af..01c5603ffe 100644
--- a/.github/workflows/lo-test.yml
+++ b/.github/workflows/lo-test.yml
@@ -99,6 +99,7 @@ jobs:
           df -h .
       - name: Build and deploy packages
         run: |
+          ulimit -SHn 65000
           cd ~/lede
           while true; do make download -j && break || true; done
           make -j$[`nproc`+1] IGNORE_ERRORS=1
@@ -254,7 +255,9 @@ jobs:
         run: |
           sudo apt update && sudo apt install qemu-utils
           sudo sysctl vm.swappiness=0
+          ulimit -SHn 65000
           curl -L https://github.com/klever1988/sshactions/releases/download/cache/ib-$DEVICE.tar.xz | tar -Jxvf -
+          set -x
           mv *imagebuilder* ib && cd ib
           . $GITHUB_WORKSPACE/scripts/merge_files.sh
           sed -i '/local/d;s/#//' files/etc/opkg/distfeeds.conf
diff --git a/scripts/merge_files.sh b/scripts/merge_files.sh
index 34c66ac42a..ffa11ba90a 100644
--- a/scripts/merge_files.sh
+++ b/scripts/merge_files.sh
@@ -1,20 +1,4 @@
 mv $GITHUB_WORKSPACE/files ./
-if [ $DEVICE = 'r2s' -o $DEVICE = 'r2c' ]; then
-    mkdir -p files/usr/bin files/etc/init.d files/etc/rc.d
-    wget https://github.com/friendlyarm/friendlywrt/raw/master-v19.07.1/target/linux/rockchip-rk3328/base-files/usr/bin/start-rk3328-pwm-fan.sh -qNP files/usr/bin
-    chmod +x files/usr/bin/start-rk3328-pwm-fan.sh
-    wget https://github.com/friendlyarm/friendlywrt/raw/master-v19.07.1/target/linux/rockchip-rk3328/base-files/etc/init.d/fa-rk3328-pwmfan -qNP files/etc/init.d
-    chmod +x files/etc/init.d/fa-rk3328-pwmfan
-    ln -sf ../init.d/fa-rk3328-pwmfan files/etc/rc.d/S96fa-rk3328-pwmfan
-fi
-if [ $DEVICE = 'r4s' ]; then
-    mkdir -p files/usr/bin files/etc/init.d files/etc/rc.d
-    wget https://raw.githubusercontent.com/btyh17mxy/friendlywrt/fix/rk3399-fan-ctl/target/linux/rockchip-rk3399/base-files/usr/bin/start-rk3399-pwm-fan.sh -qNP files/usr/bin
-    chmod +x files/usr/bin/start-rk3399-pwm-fan.sh
-    wget https://raw.githubusercontent.com/friendlyarm/friendlywrt/master-v19.07.1/target/linux/rockchip-rk3399/base-files/etc/init.d/fa-rk3399-pwmfan -qNP files/etc/init.d
-    chmod +x files/etc/init.d/fa-rk3399-pwmfan
-    ln -sf ../init.d/fa-rk3399-pwmfan files/etc/rc.d/S96fa-rk3399-pwmfan
-fi
 chmod 600 files/etc/dropbear/*
 eval `cat .config | grep \" | head -n 10`
 . files/etc/opkg/distfeeds.conf | tee files/etc/opkg/distfeeds.conf
diff --git a/scripts/merge_packages.sh b/scripts/merge_packages.sh
index 39d5bc3f5f..533c23d5d6 100644
--- a/scripts/merge_packages.sh
+++ b/scripts/merge_packages.sh
@@ -32,7 +32,6 @@ merge_package https://github.com/klever1988/helloworld/branches/tmp/luci-app-ssr
 merge_package https://github.com/klever1988/helloworld/branches/tmp/mosdns
 #merge_package https://github.com/klever1988/openwrt-mos/trunk/luci-app-mosdns
 merge_package https://github.com/project-lede/luci-app-godproxy
-merge_package https://github.com/Beginner-Go/luci-app-tencentddns
 merge_package https://github.com/sundaqiang/openwrt-packages/trunk/luci-app-services-wolplus
 merge_package https://github.com/coolsnowwolf/lede/trunk/package/lean/ntfs3-mount
 merge_package https://github.com/coolsnowwolf/lede/trunk/package/lean/ntfs3
diff --git a/scripts/patches.sh b/scripts/patches.sh
index 5ca994e2b6..94e2e63126 100644
--- a/scripts/patches.sh
+++ b/scripts/patches.sh
@@ -56,6 +56,11 @@ if [ $BRANCH == 'master' ]; then
   git apply f341ef96fe4b509a728ba1281281da96bac23673.patch
   rm f341ef96fe4b509a728ba1281281da96bac23673.patch
 
+  # enable fan control
+  wget https://github.com/friendlyarm/friendlywrt/commit/cebdc1f94dcd6363da3a5d7e1e69fd741b8b718e.patch
+  git apply cebdc1f94dcd6363da3a5d7e1e69fd741b8b718e.patch
+  rm cebdc1f94dcd6363da3a5d7e1e69fd741b8b718e.patch
+
   #this is a ugly fix
   sed -i '/procd-ujail/d' include/target.mk
   echo 'CONFIG_PACKAGE_procd-seccomp=y' >> $GITHUB_WORKSPACE/common.seed