Changing the front windshield wiper on a Porsche Boxster

Raise the windshield wiper

Unfold it to access the mechanism

Unlock the tab by sliding it from the bottom

Slide the wiper to the left (blue arrow)

Finally you can remove the wiper from the top of the windshield wiper (red arrow), there it is! All that remains is to repeat the operations in reverse order to reassemble the new one!