Upgrade

Automatic upgrade node

source <(curl -s https://raw.githubusercontent.com/ERNcrypto/polkadot/main/newupgrade.sh)

Manual upgrade node

sudo systemctl stop polkadot.service
cd polkadot-sdk
sudo git fetch
git checkout polkadot-v1.18.8
cargo build --release
sudo systemctl restart polkadot.service
sudo journalctl -u polkadot.service -f