Question was tough. But the Solution is Very Easy. Might sound non-Technical. But it works. Create another account on Apple's Website. Now Uninstall iTunes. Clean your registry with C Cleaner which is a free Software available on the Piriform Website. Now Clean your Registry with some another Registry Cleaning Utility if you have.If you don't have then download the Advanced Registry Optimizer. It cleans only 20 Registry Errors. Now place the Setup of the Advanced Registry Optimizer on the Desktop and keep on Installing and uninstalling and Clean 20 Registry Errors per Install. I had 6024 Registry Errors which are cleaned and now I have my Computer Working as a Super-Computer. Now Re-install iTunes and login using your new Account. Now you can get your new mobile in use.....