i am not able to download serial numbers. it says "sorry serial numbers not available"
If you go to the page on the Forum Nokia web site where you downloaded the tool, there is a web link for getting the serial number. If that doesn't work, please specify which tool are you having a problem with.
I had the same problem yesterday. Today i had no probs. Could be, that the process of generating serial-numbers is sometimes instable. Simply try it again.