10 days, no way to update Navigon! About to loose my mind

I know there are some posts that deal with "frozen" Apps, like the case I have now: Navigon does not finishes "Loading". I am on WiFi I have tried everything I can think about and have not been able to solve the problem. Since this have being going for a while now, I downloaded the upgrade using iTunes in the computer. It completed, but when I sync the phone, the frozen one still there and not the upgraded. No matter what I do I can not deleted from the iPhone. I had this problem with a Navigon upgrade before and solved the problem, but nothing is working now. I only have to try a Restore, but thought somebody may have a suggestion. Thanks for your help!