Yes, I have, I've waited days, and it still does the same thing. The issue is that it isn't checking the server for updates at all. The phone is just throwing up that message instantly when you hit the Software Update button, it isn't actually going out and checking the server for updates.
In the past, it would take a few seconds, check the server, and then provide a message saying that Software is Up To Date, check again in 24 hours or something, there was a timer and you couldn't check till then. However, none of that happens anymore. No timer, no Up to Date message, no anything, the phone does nothing when you hit Software Update except show a little rectangle with "No Firmware" in it.
Software Update is broken for all intents and purposes. This worries me about getting future updates since I can't update my phone anymore.