if [ -d /boot/dtb-5.0.7-rt5-001.old ]; then rm -rf /boot/dtb-5.0.7-rt5-001.old; fi
ln -sf dtb-5.0.7-rt5-001 /boot/dtb > /dev/null 2>&1 || mv /boot/dtb-5.0.7-rt5-001 /boot/dtb
exit 0