If you have not already done so, I would suggest going back to the MyUniden page, and verifying that what is shown on the page for your scanner (serial number, ESN, as well as check sum) matches exactly what is on the scanner. If all that matches up, and you have updated to the latest firmware (I believe you said you had, right?), then I'm at loss for other suggestions, assuming that you have verified the correct key (no typos).