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The phone which is recently being used by me is of the iphone 4, the phone has the problem for having the reinstall the o.s windows 7 and the itunes which is required for the phone,the actual problem is related to the sync of apps/music/movies, after the 99% of the process the error message is given An internal device error has occurred,so any one help me for this.
The internal device error which you get for the synchronization of apps/music/movies,so there might be some problems with the applications which are installed in your phone, so there it is required to restore the files where the update may help to sync the for the apps/music/movies which are required.
I even had the same kind of the problem for the sync but it was solved by me itself,the solution was i just had to change the port of my computer, this led to overcome this problem and it was possible for me to sync the required apps/music/movies,and the apps run without a problem and itunes application is supportable.
The Parallels, VMware, and other virtualization software create virtual USB ports that can interfere with the restore process. If you are trying to restore from an operating system that is running in a virtual environment,Try a different USB port directly on the computer. Put a USB 2.0 hub between the iPhone and computer.
The error is mostly given by the iphone,when you want to downgrade their iPhone or iPod touch software. The customer is likely trying to restore using an older .ipsw file.Downgrading the iPhone or iPod touch OS to a previous version is not supported,so there is requirement to install the latest official release iPhone and iPod touch software available from Apple.