The Lava mainnet-1 v.2.2.0 update will occur at block 888500. You can check the exact time here. You can enter the following commands for the version update.
# Clone repository
cd $HOME
rm -rf lava
git clone https://github.com/lavanet/lava.git
cd lava
git checkout v2.2.0
# Build binaries
export LAVA_BINARY=lavad
make build
# Prepare binaries for Cosmovisor
mkdir -p $HOME/.lava/cosmovisor/upgrades/v2.2.0/bin
mv build/lavad $HOME/.lava/cosmovisor/upgrades/v2.2.0/bin/
rm -rf build