Hi, I have Iphone 3g, 8gb on ios 3.1.3 nai i want to update my Ios to 4.2.1..

Hi, I have Iphone 3g, 8gb on ios 3.1.3 nai i want to update my Ios to 4.2.1.. i try many ways but iTunes always shows an error in last step.. i really need to update my phone to enjoy new apps and also my iphone i unlock but not jailbroken need help please

iPod nano, Windows XP

Posted on Dec 16, 2012 2:01 PM

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5 replies

Dec 16, 2012 2:24 PM in response to komail

If you did not unlock it by having the carrier unlock it you hacked the phone. It may not technically be a "jailbreak" but it is essentially the same thing. And if you hacked the phone that is why it is failing to update. Also, it will no longer be unlocked after updating if you can get it to update.


There's probably nothing we can do to help in an Apple-hosted forum, but there are resources on the Internet that may be able to help.

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Hi, I have Iphone 3g, 8gb on ios 3.1.3 nai i want to update my Ios to 4.2.1..

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