My jailbroken iPhone won't update to ios6?

My jailbroken iPhone won't update I'm keep getting an error when I try to update it from the phone it gives me a settings option or close can someone please help I don't care if I have to delete everything to get the jailbreak off?

Http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&ved=0CDMQFjAC&url=http%3A%2F%2Fwww.idownloadblog.com%2F2012%2F09%2F19%2Fhow-to-jailbreak-ios-6-and-install-cydia%2F&ei=TRhbUK2jHYnW0QHS64DICA&usg=AFQjCNHG5R4yHfA2Ccz5-CF4ckV4_CS8sg&sig2=6d6DNfx294SuHlOZnLaCbQ

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