In step 2 replace 1.25.0 with 1.27.0 version
you can skip the security part if u have your own security plan.
also for step 2 you here are the updated commands (this way u will have the option to import the wallet)
ghcup install cabal 3.2.0.0
ghcup set cabal 3.2.0.0
cabal - -version
sudo systemctl stop cnode
cd ~/git
cd cardano-node
git fetch --tags --all
git checkout 1.27.0
echo -e "package cardano-crypto-praos\n flags: -external-libsodium-vrf" > cabal.project.local
cabal configure --with-compiler=ghc-8.10.2
$CNODE_HOME/scripts/cabal-build-all.sh -o