I'm trying to restore my iPhone 3G. I've connected it to my PC, iTunes detected it and I've launched the restauration process. After a few minutes, the download stops and iTunes displats the following error message:
"error 3259 "
A simple solution that has been tested, is to disable the antivirus of your PC, during this process. It seems to be a limit, either in time or volume of data that can be downloaded. Thus, downloading via iTunes (very heavy) systematically crashes. By disabling the antivirus, you can download without problems.