cd
mkdir ~/update (only first time)
cd update
wget https://raw.githubusercontent.com/vilija19/polka_scripts/main/update_node (only first time)
chmod +x update_node
./update_node (without the v in version). Example: ./update_node 0.9.8
kusama: User running the service (change accordingly in chown kusama:kusama)
/home/kusama/ change to your home directory.
ksm-validator.service: Service name (change accordingly in all instances)
The last line journalctl will run the service logs to check the update has been successful. Exit with Ctrl+C
Based on https://gist.github.com/michalisFr/daa01c7374793a684a3a1f61e4959492