Iphone 5 update failed via iTunes. Needs to restore but keeps getting errors

Hi,

Just tried to update my iphone 5 to iOS 6.1 through iTunes in WIndows 7. First time actually, usually I have been updating directly in the phone without any problems.

When iTunes tried to update my phone it got an error, seems it didn't even got to begin updating it. Now iTunes keeps telling me I need to do a restore of the phone to be able to use it. Got the iTunes logo and a USB cabel on the screen.

Anyhow, it seems to work untill it are ready to implement the restore on my phone. The apple logo and the progress bar appears but nothing happens, it just won't move.

After a couple of minutes iTunes drops the connection to the phone and gives me an error code of 1611 and my phone goes back to the restore/recovery screen.

Seems there is a problem with the USB transfer? The weird thing is that I've been synchronizing without any problems earlier. Though when iTunes was about to begin update it installed the Apple Mobile USB drivers again, perhaps that might be the problem?

I have also followed steps in the support area with disabling security programs, reinstalling iTunes etc without any luck.