I'm having problems with my screen and want to take my phone to Apple. I'm using a Blackra1n 3.1.2 JB 3GS....I've told iTunes NOT to update to 3.1.3, because as I understand it, this doesn't work for JBing? Anyway, obviously I need to restore my phone before I go to Apple, but the only option it gives wen I click "restore" is to "restore and update," in which "the newest version of the iphone software will be installed." in other words 3.1.3 right? How can I bypass this update?