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Hi. I have an Iphone 3g 16gb. I got it unlocked and jail broken. At present it is having version 3 installed. Since last few days i am unable to sync iphone with itunes and as a result cannot tranfer songs from itunes to iphone. Every time i try to sync it backs up the iphone and then it says "The iphone cannot be synced. An unknown error occured 13019". Can anyone suggest what is the problem and solution.

Thanks.