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How to Fix iTunes Error 1 While Restoring iPhone 4S to iOS 5.1.1?

Some of the most prevalent errors that you can experience while working with your iPhone 4S are the dreaded iTunes errors. If you are a jailbreak user, then the more likely that you will be able to encounter such errors when restoring, jailbreaking or downgrading your devices. There is a wide range of iTunes errors that are waiting to frustrate you out there. However, the key to solving such errors is to know how these errors are caused and so you can perform the necessary troubleshooting steps. One of the many iTunes errors that you may experience is the iTunes Error 1.

iTunes-Error

What is iTunes Error 1?

Fix iTunes Error 1
According to the official documentation of Apple, iTunes Error 1 is an error that could indicate that there is an issue with the hardware itself. Apple recommends that you perform troubleshooting security software issues and restore your device in a good, working computer. If the error persists, it is possible that the device needs to be taken straight to an Apple service. If you have this error, then it signals that you have an iPhone 4S baseband corrupt problem. You may encounter this problem while restoring to present firmware versions such as iOS 5.1.1.

How to Fix iTunes Error 1 While Restoring iPhone 4S to iOS 5.1.1?

I know that having hardware issues on an iPhone sounds bad. In general, the best course of action is to bring your iPhone 4S to the nearest Apple store for possible repairs or replacement. But if you are lucky, then this is still a way for you to bypass iTunes error 1. We recommend that you try to restore your device to iOS 5.0.1 (9A406). Restoring to iOS 5.0.1 will update your baseband and hopefully it will fix your corrupted baseband.
iTunes-Restore
In addition, during an iTunes restore, SHSH will be retrieved from Apple by the gs.apple.com and also acquires API Tickets for the firmware and as well as the baseband. This is provided of course that you have the necessary prerequisites (such as your SHSH + APTicket) to restore to iOS 5.0.1. Also make sure that you have checked the host file in the in the following directories: Windows > System32 > Driver > etc > host. Open the host file in Notepad as an administrator and check if the gs.apple.com xx.xx.xx.xx has "#" before (without the quotes).

And that's how you can fix the iPhone 4S Error 1. As indicated, this is not a foolproof method which is why I said that if you are lucky. However, it is worth trying out. If all else fails, then just take your device to Apple for the essential repairs or possible replacement. If you have questions on how to fix iTunes Error 1, just let us known in the comments.

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3 comments
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  •  
    Ben1 year, 1 month ago

    I cant see the ex,#########gs.apple. com in my host.pls help

  •  
    Rollie1 year, 10 months ago

    I have tried about everything there is to try and fix the error 1 on my 4s, it worked fine up till I put 8.0 update on it, after it put the update on via the phone, it was ok apart from it could not get a signal, kept on trying to connect to network for 24 hours with  no success, so I tried to put it right with iTunes restore that i when I found that the first time it was updated and the reason for it not being able to get a connection was the update had removed the IMEI this is how it give you error 1, and then its just a brick, unless there is a way of putting the IMEI back into the phone there is nothing that can be done. 

    •  
      THoMZoNE.NeT1 year, 10 months ago

      Hi! I have this problem too. Please help someone! But i have IMEI…