I'm having difficulty upgrading as well. The update appears on my phone, and I've successfully downloaded it, however, when I try to install the update, the N9 gets stuck at 0% and reads, "Update Interrupted" and asks me to either "try Again" or "cancel" I've rebooted the phone and "tried again" several times, but still no luck. Anyone have any idea what the problem may be? I was thinking of deleting the download file and then re-downloading it and trying the update again. Would this help? If you think it will, where does the download file get saved to?