Downloading the files is only the first step. To truly improve your score on exams like the DELF B1 or B2, try these techniques:
When looking for the "upd" (updated) versions of these zip files, you should expect: comprehension orale 3 b1 b2zip upd
For the most reliable experience, consider the digital versions provided by the publisher, which often include interactive "Espace Digital" features that work much better than a standard zip folder. Downloading the files is only the first step