I see all the instructions for using blackrain to jailbrake this, or ultrasnow to unlock that.... I am not sure what I need to do. I would appreciate you letting me know what it is I want to do! I have a 3GS, currently Jailbroken and Unlocked. I am on TMobile in US. I have version 4.1 (8B117), carrier 8.0 modem firmware 5.13.04 Obviously, I need to stay JB and unlocked... what is the newest version I can upgrade to, and how do I do that? Do I follow the unlock path, the JB path, or what should I do to upgrade? Thank you!