The web browser in my new Model S seems to not like PDFs. JPGs display just fine. But anytime I click on a link to a PDF I get an error message. Is this normal? Also, I sometimes get messages from websites I'm on that I need to update Flash. That's usually accompanied by a link to an update. I *thought* the only updates came from Tesla. Correct? Or is it possible to update the browser and/or parts of it separate from Tesla?