If you log in as the admin, you will see the version number in the top bar. E.g. "Loyalty Platform v1.0.0".
In the latest Zip file you download there is an
\---productinnovation-loyaltyplatform-[commit_hash] +---docs +---public \---updates incremental-update-x.x.x.zip
incremental-update-x.x.x.zip contains all updated files, so you do not have to worry about your current version. You can simply overwrite the files of your installation with the update files, it doesn't matter which version the Zip or your installation has.
incremental-update-x.x.x.zip file contains a
public directory. Extract the files in that directory to the root directory of your Loyalty Platform installation.
The contents of the Zip file you download always has the latest version in the
public directory. You do not need to update if you install the script for the first time. Only if you have already installed the script and want to update to a newer version.