diff --git a/addons/point_of_sale/tools/posbox/configuration/posbox_update.sh b/addons/point_of_sale/tools/posbox/configuration/posbox_update.sh
index 6384181f4fa..93f1a003f18 100755
--- a/addons/point_of_sale/tools/posbox/configuration/posbox_update.sh
+++ b/addons/point_of_sale/tools/posbox/configuration/posbox_update.sh
@@ -5,7 +5,24 @@ sudo mount -o remount,rw /
 cd /home/pi/odoo
 localbranch=$(git symbolic-ref -q --short HEAD)
 localremote=$(git config branch.$localbranch.remote)
+
+echo "addons/point_of_sale/tools/posbox/overwrite_after_init/home/pi/odoo" >> .git/info/sparse-checkout
+
 git fetch "${localremote}" "${localbranch}" --depth=1
 git reset "${localremote}"/"${localbranch}" --hard
+
+git clean -df
+cp -a /home/pi/odoo/addons/point_of_sale/tools/posbox/overwrite_after_init/home/pi/odoo/* /home/pi/odoo/
+rm -r /home/pi/odoo/addons/point_of_sale/tools/posbox/overwrite_after_init
+
+sudo find / -type f -name "*.iotpatch" 2> /dev/null | while read iotpatch; do
+    DIR=$(dirname "${iotpatch}")
+    BASE=$(basename "${iotpatch%.iotpatch}")
+    sudo find "${DIR}" -type f -name "${BASE}" ! -name "*.iotpatch" | while read file; do
+        sudo patch -f "${file}" < "${iotpatch}"
+    done
+done
+
 sudo mount -o remount,ro /
+sudo mount -o remount,rw /root_bypass_ramdisks/etc/cups
 (sleep 5 && sudo service odoo restart) &