I want to update my jailbroken iPhone 3GS iOS 4.1 to iOS 5.1 or any other iOS which is best for it. But I havent synced my iphone since a long time and that device I synced it to is no longer with me. So there's no backup. PLease help me:(
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1Have a look here and see if you can edit in some more details if you still have questions. apple.stackexchange.com/questions/53244/…– bmike ♦Commented Dec 30, 2012 at 15:04
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1 Answer
Put your device in DFU mode. (http://www.iclarified.com/entry/index.php?enid=1034 and http://www.ihackintosh.com/2009/06/recovery-mode-and-dfu-mode/). Connect to iTunes and it should prompt you with a box saying that your iPhone is in DFU mode and needs to be restored.
Sometimes it's possible to backup your phone and restore from that one once updated. Will not recommend it though; did that with my iPod and it didn't work perfectly afterwards.
