Using Cosmovisor streamlines upgrade preparation. Just build new binaries and move them to the Cosmovisor upgrades directory.
rm -rf quasar
git clone https://github.com/quasar-finance/quasar.git
git checkout v1.0.0-rc1-testnet
Latest commit :
mkdir -p $HOME/.quasarnode/cosmovisor/upgrades/v1/bin
mv build/quasarnoded $HOME/.quasarnode/cosmovisor/upgrades/v1/bin/
rm -rf build
That's all! Cosmovisor will take care of the upgrade automatically once the specified block height is reached.