4.0.1 to 4.0.2

Newbie that purchased 4.0.1 a few weeks back and just downloaded the 4.0.2 update. Am I supposed to overwrite the 4.0.1 files with 4.0.2? Am I just blind and not seeing an option from within the cart admin to update?

An update-message will appear in your backend in a week or so according to CS-Cart. Do NOT overwrite the files. Wait for the update to be rolled out.