I downloaded Pwnage Tool 126.96.36.199 and redsn0w_mac_0.9.6rc16 for my Mac OSX. My iphone is a 3GS with 4.3.3 FW and I wanted to ask If is it ok to jailbreak my phone, will it drain too much battery and are these tools the proper ones for my iphone? Also, If a firmware is released, what happens next? Do I have to install all again? Thanks for the help!