I came in to possesion of an old iPhone 2g which is jailbroken. It runs 1.0.1 and hasn't been updated for about 1.5 years. My question is can I simply update it to 3.0 or do I need to update to 1.0.1 and then to 3.0? I'm concerned that since this iPhone is jailbroken if I simply update it to 3.0 right away it will be bricked.