This assumes you have already cloned the SD2-repository.

If not, please follow the installation instructions how to do so:

1. Graphical user Interfaces for Windows

2. Updateting

The word to look for is "Pull", both GUIs have this option.

For Command-line fans, simple right-click ScriptDev2-directory, choose "Git Bash here" and then type
$ git pull
to Update

3. Restoring

In case you polluted something in your working directory open the Git bash, and type
$ git reset --hard origin/master

Warning: This will remove every custom changes