Hi dlmushi
I am pleased that the process posted by nando61 has been successful for you, and thanks for providing feedback. It now seems to have worked for N70, N73 and N93 apart from loss of data unfortunately.
It may however be a small price to pay if you have a "bricked" "N" Series and visit to Nokia Service Centre neither practical or feasible.
Lastly it must be remembered that a lot of update failures are due to movement of PopPort connector on N70 and N80, and with adoption of mini usb on newer models hopefully a thing of the past.
Happy to have helped the forum in a small way from 2007-10