Seat leon mk2 tweeter issue

Nov 9, 2020
Hey! I’ve got a seat leon mk2 FR 2007.

went to change tweeters in the door and they look like this.... (see picture) any advice on How to change them? The black rivets are where the bolts are supposed to be..I’m unsure how to change these to bolts or even how to remove them? Any help is appreciated
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