Upgraded the following machines from debian 9 to debian 10:
When removing the head unit in my car, the head unit is attached to a carriage with screws. Those are the screws you see. When removing the head unit though, you don't have to worry about these screws: you just need to slide the carriage out. There are little tabs that need to be pushed in so that the whole thing can slide out. The top tabs are probably already pushed in, they're quite worn at this point.