I just updated the software on the Nokia N91 I am evaluating using the Nokia Software Update site that lets you update the firmware on your device without sending it in to a service center. Over-the-air updates are not yet rolled out, but you can use a PC and USB cable to update several models now. I just saw on All About Symbian that an update for the Nokia E61 is available and I am installing the software right now on my device. Visit the Nokia Phone Software Update site to see if your particular model has an update available. I found an extensive list of what the update is supposed to improve, which is why I didn't hesitate to make the update. I don't see how they can add "improvements to overall reliability and performance" when my device has been rock solid and has not randomly reset on my since I bought it a couple months ago. My Treo used to reset all the time and I am extremely impressed with the reliability.