How to fix iTunes unknown error (-1)?

When i try to restore the iphone 4s GSM ios 6.0.1, i get error code -1

There are three steps to fix itunes 1 error

If you have itunes 1 error then there's a 94% chance that your computer system has registry problems. You must get rid of it quickly. The following software is a professional fix itunes 1 error, additionally, you'll be able to fix a lot of common computer problems. I think you should try it, I believe that it can help you:

* Step 1 - Down load a itunes 1 problem fix tool, install this error fix software.
* Step 2 - Open the itunes 1 problem fix program and scan you pc for free
* Step 3 - And then click the Repair All Button again and you completed!

Here are the web site of itunes 1 error repair program

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