Well, i finally decided to install over the existing installation.
Result:
General configuraton was lost: So if you want to do the same, make capture-screen of the configuration tabs to know what you changed :P
Objects (and their pictures) remain intact: Good!
Files obviously was replaced: So if you changed any non-core files (css, forms phps..), backup them before reinstall the component and after overwrite them back.
That's All.
Hope this will help anyone in my same situation, because sometimes you have to full customize a test component to know if it fits exactly to your needs... and this was one of this times!
Good Work Artio :)