Power loss duaring N900 firmare update.
 

I were updating my N900 firmware to version 51-1. Before it was finished I had power loss and so the operation was interrupted. Now when i try to switch the device on it shows nokia screen and dies.
Then I tried to flash the new firmware but the phone don`t ebter flashing mode. The indicator light turns yellow, it shows nokia screen and vibrates. If I don`t dosconnect the devise it keeps vibrating after evry 30 sec.

If someone knows what can I do to get the phone working again please help !

I have PCs with Win XP and Win 7. I don`t know how to use linux, but if someone knows what to do, give me detailed instructions.