Sony Ericsson Xperia X10 :: Unable To Update To Android 2.1 Using Pc Companion

i got the update notification for xperia x10 few days back, i quickily connected it to pc using pc companion and took the backup, then i started the update process, it reached till prepared, and after that it started initialization, but here the problem started. it was showing the initialization for 4 hours,i thought may be it hanged so i stopped it and disconnected the phone and restarted the update process, same thing happened this time. the progress bar doesnt show any progress after initialization, it showed 100% in initialization after some 4 hours but after tht nothing happened.i dont knw the problem, it can't be network problem, as i have a 1mbps connection and i checked the speed also before starting the update,i kept the update process as it is for 10 hours, but it still didnt show any progress from the last time.