This is a major version of Helix Ultimate introduces a lot of improvements.
git init
git remote add origin git@github.com:JoomShaper/helix-ultimate.git
Or If you are not using SSH then run git remote add origin https://github.com/JoomShaper/helix-ultimate.git
git fetch
git checkout 2.0.1
cd plugins/system/helixultimate
composer install
composer dump-autoload -o
Extensions > Manage > Discover
shaper_helixultimate
template and
System - Helix Ultimate Framework
plugin.Extensions > Plugins
and search for the plugin
System - Helix Ultimate Framework
and enable it.