I recently got an iPhone 3G, and I have been wanting to JailBreak it for a few reasons. I have already JailBroken my iPod Touch 2G 2.2.1, so I am not that new to JB'ing. My questions however, are as follows.
What is the newest iPhone 3G 2.2.1 JailBreak?
(Preferably one that doesnt delete my current contacts.)
How easy is it to restore to Factory Default if I need to return the phone?
Please respond quickly, or as quick as possible. Any help is greatly appriciated.
Thanks, Alex.

(Preferably one that doesnt delete my current contacts.)

Please respond quickly, or as quick as possible. Any help is greatly appriciated.
Thanks, Alex.