diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 0cbbe24..9707b0a 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -12,7 +12,7 @@ jobs:
     outputs:
       upload_url: ${{ steps.create_release.outputs.upload_url }}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           fetch-depth: 0
           submodules: false
@@ -41,7 +41,7 @@ jobs:
     runs-on: ubuntu-20.04
     needs: [create_release]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           submodules: true
       - name: Workaround for apt update failure
@@ -91,7 +91,7 @@ jobs:
     runs-on: ubuntu-20.04
     needs: [create_release]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           submodules: true
       - name: Workaround for apt update failure
@@ -154,7 +154,7 @@ jobs:
             lilo: gen3_7.bin
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           submodules: true
       - name: Workaround for apt update failure
@@ -200,7 +200,7 @@ jobs:
           - model: h1
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           submodules: true
       - name: Workaround for apt update failure
@@ -234,7 +234,7 @@ jobs:
     runs-on: ubuntu-20.04
     needs: [create_release]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           submodules: true
       - name: Make /opt writable
@@ -277,7 +277,7 @@ jobs:
     runs-on: ubuntu-20.04
     needs: [create_release]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           submodules: true
       - name: Workaround for apt update failure
diff --git a/Makefile b/Makefile
index e966063..3cc25d3 100644
--- a/Makefile
+++ b/Makefile
@@ -150,6 +150,7 @@ brainux:
 	fi
 	sudo cp /usr/bin/qemu-arm-static brainux/usr/bin/
 	sudo cp ./os-brainux/setup_brainux.sh brainux/
+	sudo ./os-brainux/override-pre.sh ./os-brainux/override ./brainux
 	sudo -E chroot brainux /setup_brainux.sh
 	sudo rm brainux/setup_brainux.sh
 	sudo ./os-brainux/override.sh ./os-brainux/override ./brainux
diff --git a/os-brainux/override-pre.sh b/os-brainux/override-pre.sh
new file mode 100755
index 0000000..b776f4a
--- /dev/null
+++ b/os-brainux/override-pre.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+set -uex -o pipefail
+
+SRC=$1
+DST=$2
+
+install -g root -o root -m 0644 $SRC/lib/systemd/system/boot.mount $DST/lib/systemd/system/boot.mount
+install -g root -o root -m 0644 $SRC/lib/systemd/system/rndis_gadget.service $DST/lib/systemd/system/rndis_gadget.service
+install -g root -o root -m 0755 $SRC/usr/bin/enable_rndis_gadget $DST/usr/bin/enable_rndis_gadget
diff --git a/os-brainux/override.sh b/os-brainux/override.sh
index 06f29aa..e28c617 100755
--- a/os-brainux/override.sh
+++ b/os-brainux/override.sh
@@ -19,8 +19,3 @@ install -g 1000 -o 1000 -m 0644 $SRC/home/user/.config/fcitx/profile $DST/home/u
 sudo -u#1000 -g#1000 mkdir -p $DST/home/user/lxterminal
 install -g 1000 -o 1000 -m 0644 $SRC/home/user/lxterminal/lxterminal.conf $DST/home/user/lxterminal/lxterminal.conf
 install -g root -o root -m 0644 -D $SRC/etc/jwm/system.jwmrc $DST/etc/jwm/system.jwmrc
-
-install -g root -o root -m 0644 $SRC/lib/systemd/system/boot.mount $DST/lib/systemd/system/boot.mount
-
-install -g root -o root -m 0644 $SRC/lib/systemd/system/rndis_gadget.service $DST/lib/systemd/system/rndis_gadget.service
-install -g root -o root -m 0755 $SRC/usr/bin/enable_rndis_gadget $DST/usr/bin/enable_rndis_gadget