I still have my N9 lying around somewhere - had to get the sim tray replaced two or three times but otherwise I loved it. How did you update the security certificates? I tried to boot mine up a while back but it was basically unusable on the web because of HTTPS.
I haven't updated the security certificates so far, bit I don't think that most of the TLS connection issues are due to expired CA certificates in the certificate bundle. I believe it's because it can't negotiate a mutually agreed upon cipher.
It still works with a few websites like this one. In fact, I'm using my N9 to post this comment :-).
