la bro!!! well right now there is only tethered jailbreak for 4.3.5!!!if u dun know what tethered is plz google it. if u wanna do it anyway !! downnload redsnow 0.9.9b4 and ur ipsw!!!open redsnow click on Extras!then select IPSW!!! and rest of the process should be on the screen!!! i hope you can continure from there!!! still have problem doing !! let me know!!!